Why was natural selection an important contribution to the theory of evolution?
OIt proved that evolution is true.
OIt explained how evolution works.
OIt summarized the process of evolution.
It highlighted the main points of evolution.

Answers

Answer 1

OIt summarized the process of evolution.


Related Questions

In pea plants, tallness (t) is dominant to shortness (t). what are the predicted percentages of the genotypes of the offspring if a homozygous short plant is crossed with a heterozygous tall plant?

Answers

If a homozygous short plant (tt) is crossed with a heterozygous tall plant (Tt), the percentage of tall offsprings is 50% and the percentage of short offspring is 50%.

A heterozygous tall pea plant will have the genotype "Tt" and a homozygous short pea plant will have the genotype "tt" because homozygous means that both alleles are identical.

Since 'T' is dominant over 't', any plant with at least one "T" allele will be tall (the dominant trait), regardless of what the other allele is.

The punett square of the following problem will have 2 squares with Tt genotype and 2 squares with tt genotype.

Hence, the genotypic ratio of F1 generation will be

Tt : tt

1 : 1

And phenotypic ratio of F1 generation will be

Tall : Short

1 : 1

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Scientists group organisms into kingdoms by looking at specific characteristics. Thermus aquaticus, shown below, is a specialized bacteria called a thermophile. Thermophiles are microorganisms that can live in bodies of water that are extremely hot, such as deep sea hydrothermal vents.

A microscopic image of thermus aquaticus.

Which characteristic most likely describes a mushroom but not Thermus aquaticus?
cell wall
eukaryotic
unicellular
prokaryotic

Answers

Eukaryotic is the characteristic most likely describes a mushroom but not Thermus aquaticus because it is a is prokaryotic organism.

What are eukaryotic organisms?

Eukaryotic organisms are life forms that are characterized to have cell nuclei and membrane-bound organelles.

Eukaryotic organisms can be either unicellular or multicellular (e.g. plants and animals).

In conclusion, Eukaryotic is the characteristic most likely describes a mushroom but not the bacterium Thermus aquaticus.

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Select the correct answer. A force of 15 newtons is applied to both Object A with a mass of 25 kilograms and Object B with a mass of 50 kilograms. What is true about the acceleration of Object A and Object B? A. Acceleration of Object A is four times that of the acceleration of Object B. B. Acceleration of Object A is the same as the acceleration of Object B. C. Acceleration of Object A is half the acceleration of Object B. D. Acceleration of Object A is twice that of the acceleration of Object B.

Answers

By Newton's second law

F=ma , F=force (unit= N)

m=mass (Kg), a=acceleration (m/s2)

By applying the formula, we can calculate acceleration

a = F/ m

For object A,

Force =15N, Mass=25kg

a= 15/25

acceleration, a=0.6m/s2

For object B,

Force=15N, Mass=50 kg

a=15/50

acceleration,a=0.3m/s2

By calculation, the acceleration of object A is twice the of object B.

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Answer:

See image

Explanation:

Plato

During exponential growth, which of the following is true?
A) The larger a population, the slower it grows.
B) The larger a population gets, the faster it grows.
C) The size of the population has no effect on the growth of the population.
D) The population rapidly shrinks down to nothing.

Answers

Explanation:


Answer: C. I got it right on my test :) please like

What are the most primitive surviving vertebrates?

Answers

The most primitive surviving vertebrate are those in the Agnatha class.

Agnatha

This refers to a group of fishes that are jawless. They include lampreys and hagfishes.

Fishes in the Agnathan class have no fins nor stomachs.

Hagfishes still exist with over 76 species in different cold waters around the world.

Lampreys live mostly as parasites on other fishes and are found in the Atlantic oceans.

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Arrange the following events that occurred during the French and Indian War in chronological order.
the British gain control of St. Lawrence River
the Battle of Monongahela River
the battle for the city of Quebec
the siege of Fort William Henry





Answers

1. Monongahela River

2. Fort William Henry

3. British gain control of the St. Lawrence River

4. Battle of Quebec

What is the Battle of Monongahela River?

All battles given were between the French and British. However, the two battles that happened prior to 1756 were the Battle of Monongahela River and the Battle of Lake George. The first battle happened on July 9, 1755. It was won by the French and Indian troops against the British and Americans. The second battle happened on September 8, 1755. It was won by the British, and is considered their first major victory against the French troops.

Thus, this could be the answer.

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Which of the following correctly describes what happens to liquid and gas particles with
more thermal energy?
Select one:
O a. Liquid and gas particles with more thermal energy expand.
O b. Liquid and gas particles with more thermal energy condense.
O c.
Liquid and gas particles with more thermal energy rise.
O d. Liquid and gas particles with more thermal energy fall.

Answers

Answer:

i think a. is correct answer (:

hope its help for u

What is the immune system response to malaria?



Outline the 3 lines of defence of the immune system.

Answers

Answer:

Although the evidence for a protective role of B cells and antibodies has been noted, the direct contribution of CD4+ T cells in protection against blood stages beyond a helper function for CD4+ T cells has mainly derived from rodent models of malaria.

Membrane proteins that bind to signal by which cells communicate are called

Answers

Membrane proteins that bind to signal by which cells communicate are called receptors are generally transmembrane protein.

What is the function of the stop sequence to a transmembrane protein?

When the protein presents an internal signal sequence (SSI), this sequence, in addition to directing the transport of the translational complex to the REG, will also act as an SPT, with the carboxy-terminal portion of the protein facing the lumen. from the reticulum or into the cytosol.

in this case, many transmembrane proteins function as gateways to permit the transport of specific substances across the membrane.

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Photon energy, Wave Frequency and Wavelength are represented in the:

Answers

Photon energy, Wave Frequency, and Wavelength are represented in the Electromagnetic spectrum. Thus, the correct option is A.

What is Wavelength?

Wavelength may be defined as the space between equivalent points (crests) in the contiguous cycles of a waveform movement propagated in space. It is represented as λ (lambda).

The wave frequency and wavelength are inversely related to one another, while photon energy is directly related to wave frequency, but inversely related to wavelength.

We study the association of all these terms in the unit of the electromagnetic spectrum.

Therefore, it is well described above.

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Four different thermometers were used to measure the temperature of a sample of impure boiling water. The measurements are recorded in the table below.

Thermometer Temperature
Reading 1 Temperature
Reading 2 Temperature
Reading 3
W 100.1°C 99.9°C 96.9°C
X 100.4°C 102.3°C 101.4°C
Y 90.0°C 95.2°C 98.6°C
Z 90.8°C 90.6°C 90.7°C

The actual boiling point of pure water is 100.0°C.

What can be concluded from the data about the reliability and validity of the thermometers?

A.
Thermometer W is the most reliable.
B.
Thermometer X has the highest validity.
C.
Thermometer Z is the most reliable.
D.
Thermometer Y has the highest validity.

Answers

Thermometer Z is the most reliable but has the least validity.Thermometer W has the highest validity.The rank for reliability, from most reliable to least reliable, is:              Z > X > W > YThe rank for validity, from greatest validy to lowest validity is:              W > X > Y > Z

How, explain your answer?

Reliability is another name for the precision of the measurement, and it means how well the value is repeated; this is, how close the different measurements are to each other. If the measurements are close one to each other, then the instrument is precise or reliable (high reliability).

Validity is another name for the accuracy of the measurement; this is, how close the measurement is to the true or accepted value.

With that, we can compare the reliability (precision) and validity (accuracy) of the four different thermometers.

Repeat the table:

Temperatures in °C:

Thermometer  Reading 1   Reading 2   Reading 3

       W                 100.1             99.9             96.9

        X                 100.4           102.3             101.4

        Y                  90.0            95.2             98.6

        Z                  90.8             90.6            90.7

Reliability:

To analyze reliability (precision) we must compare the measures of every thermometer among them. A good approximation can be made calculating the range, i.e. the difference between the largest and the smallest readings:

For W: largest reading - smallest reading = 100.1°C - 96.9°C = 3.2°CFor X: largest reading - smallest reading = 102.3°C - 100.4°C = 1.9°CFor Y: largest reading - smallest reading = 98.6°C - 90.0°C = 8.6°CFor Z: largest reading - smallest reading = 90.8°C - 90.6°C = 0.2°C

Now, you conclude that the most reliable is thermometer Z and the least reliable is thermometer Y. The complete ranking, from most reliable to least reliable is:

Z > X > W > Y

Validity:

To determine validity you must compare the mean of the three measures for each thermometer with the accepted value for the boiling point of pure water (100.0°C).

The mean is the sum of the three readings divided by 3.

The absolute error is calculated with the formula:

absolute error = | accepted value - calculated value |.

The calculated value is the mean.

For W: mean = (100.1 + 99.9 + 96.9)°C / 3 = 99.0°C

                   absolute error = 100.0°C - 99.0°C = 1.0°C

For X: mean = (100.4 + 102.3 + 101.4)°C / 3 = 101.4 °C

                  absolute error = 101.4°C - 100.0°C = 1.4° For Y: mean = (90.0 + 95.2 + 98.6)°C / 3 = 94.6°C

                  absolute error = 100.0°C - 94.6°C = 5.4°C

For Z: mean = (90.8 + 90.6 + 90.7)°C / 3 = 90.7°C

                  absolute error = 100.0°C - 90.7°C = 9.3°C

Now you can rank the thermometers as per their validity (accuracy):

1.0°C < 1.4°C < 5.4°C < 9.3°C

Thus, W is the most accurate, X is the second most accurate, Y is the third, and Z is the least accurate.

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what are the components of the PNS ?

Answers

The components of the Peripheral nervous system consists of nerves, ganglia and nerve endings.

What is the function of peripheral nervous system?

The peripheral nervous system is one of the divisions of the central nervous system. Its function is to transmit information from it to other organs and specific parts of the body. Function is carried out through the nerves and nerve ganglia.

In this case, we can say that The Peripheral Nervous System is formed by nerves and ganglia and its function is to bring information to the Central Nervous System and responses to Organs effector organs.

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A. Point Source
B. Non-Point Source
This would be
considered what
type of water
pollution?

Answers

The given scenario would be considered "Point Source" water pollution.

Point source water pollution refers to the contamination of water bodies that can be traced back to a specific, identifiable source or location. This type of pollution occurs when pollutants are discharged directly into water bodies through pipes, drains, or other identifiable outlets.

These sources can include industrial facilities, wastewater treatment plants, oil spills, or sewage systems. Point source pollution is relatively easier to monitor and control because the source is identifiable, allowing for targeted measures to reduce or eliminate the pollution.

In contrast, non-point source pollution refers to pollution that is more diffuse and comes from multiple, widespread sources, such as agricultural runoff, urban runoff, or atmospheric deposition.

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for patients with prediabetes, what strategies does the diabetes prevention program show are effective in reducing the risk of progressing to type 2 diabetes?

Answers

Lifestyle changes such as losing weight and living an active life are effective in reducing the risk of progression of prediabetes to type 2 diabetes.

What is diabetes?

Diabetes is a disease in which the body is unable to utilize glucose in the body efficiently.

Patients who are prediabetic are at risk of developing diabetes.

However, the diabetes prevention program shows that lifestyle changes such as losing weight and living an active life are effective in reducing the risk of progressing to type 2 diabetes.

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Answer:

it is D

Explanation:

got it right edge 2022

Organisms that are distributed
evenly across the environment
have a
dispersal
pattern.
A. uniform
B. clumped
C. random

Answers

An even distribution of organisms in an environment would be A. uniform.

Why is acetylcholine broken down?

Answers

Acetylcholine broken down is the process by which this neurotransmitter activates a suitable ligand-receptor to trigger a cell signaling pathway.

What is Acetylcholine?

Acetylcholine is a chemical messenger (i.e., a neurotransmitter) that is used to transmit signals inside the body.

Acetylcholine broken down is due to its hydrolysis, which ends cell signaling between brain synapses.

In conclusion, Acetylcholine broken down is the process by which this neurotransmitter activates a suitable ligand-receptor to trigger a cell signaling pathway.

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The receptor cells for vision are located in the _____ and are called _____ and _____

Answers

The receptor cells for vision are located in the retina of the eyes and are called rods and cones.

What are receptor cells?

Receptor cells are proteins found either inside a cell or on its surface which receive a signal.

The two primary photoreceptor cells are rods and cones and they  contribute to the information used by the visual system to form a representation of the sight.

They are found in the retina of the eye.

Therefore, the receptor cells for vision are located in the retina of the eyes and are called rods and cones.

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What is the role of RNA polymerase?Which molecule brings amino acids to the ribosomes to be assembled into proteins?

Answers

An enzyme called RNA polymerase is in charge of converting a DNA sequence into an RNA sequence during transcription.

The molecule that brings amino acids to the ribosomes to be assembled into proteins is Transfer RNA (tRNA) . Transfer RNA (tRNA), small molecule in cells that carries amino acids to organelles called ribosomes, where they are linked into proteins.

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Why was natural selection an important contribution to the theory of evolution?

Answers

Answer:

Natural selection is an important contribution to the theory of evolution because it increases an individual's ability to survive and compete and reproduce.

Explanation:


What day is considered to be the first day of a female's reproductive cycle?
• When hormone levels are low and the uterus lining is shed.
• When hormone levels are high and the uterus lining is shed.
• When hormone levels are low and the ovary releases an egg.
• When hormone levels are high and the ovary releases an egg.

Answers

Question: What day is considered to be the first day of a female's reproductive cycle?

Answer: When hormone levels are low and the uterus lining is shed.

The first day of a female's reproductive cycle is when hormone levels are low and the ovary releases an egg. This is known as ovulation and is the most important part of a woman's menstrual cycle.

What happen during ovulation?

During ovulation, the egg's follicle bursts open and is released, travelling down the fallopian tube towards the uterus.

If the egg is fertilised, it will implant in the uterus and a pregnancy will begin; if it is not, it will be reabsorbed by the body, and the cycle will restart.

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Because one of the two strands of a replicated DNA molecule is newly synthesized and the other is the original template, DNA replication is said to be a ______ process.

Answers

Because one of the two strands of a replicated DNA molecule is newly synthesized and the other is the original template, DNA replication is said to be a semi-conservative process.

What is DNA replication?

DNA replication may be defined as the biological process that involves duplicating a DNA molecule comparable to the construction of two DNA molecules.

DNA replication is proceeded by the semiconservative model, which means that the parental double helix is half conserved, and each parental single strand remains intact.

Therefore, it is well described above.

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- Beaker A has 5% salt; Beaker B has 10% salt; Beaker C has 20% salt. Which beaker has
a higher concentration
A. beaker A
C. beaker C
of water?
B. beaker B

Answers

Answer: C. Beaker C

Explanation:

Because there is more of salt, the solute in the the solvent, water.

Which does NOT describe bacteria? one niet
A They are prokaryotic cells.
B They have cell walls and cell membranes.
C Their genetic material is found in the cytoplasm.
D They have membrane-bound organelles.

Answers

Answer:

D they have membrane bound organelles

Explanation:

Explain the feelings of Eliezer and his father during the Rosh Hashana celebration

Answers

Answer:

got this from a website

Explanation:

Eliezer shares a silent, powerful moment of sadness and understanding with his father. For Yom Kippur, when Jews traditionally fast, his father forbids Eliezer from fasting. Eliezer no longer believes in such rituals, anyway.

it is a feeling of sadness

Which statement best describes scientists who contributed to the current body of science knowledge

Answers

The appropriate choice must be (A).

What is the role of scientists in society?

Science contributes greatly to the generation of knowledge and hence contributes to the operation of democracies, fosters innovation and allows countries to be competitive in the global economy.

The ongoing work of men and women from various nations throughout history has contributed to the existing body of scientific knowledge.

It is not simply wealthy men with money who could conduct experiments and get a scientific conclusion. We are all familiar with Marie Curie, who is renowned for her work in radioactivity and twice earned the Noble Prize.

Of course, advances in science have been accomplished before to the 20th century; for instance, Newton discovered gravity in the 17th century.

Therefore, the existing body of scientific knowledge is not constrained by specific limitations; rather, it is the result of ongoing efforts made by men and women from various nations throughout history.

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Hemophilia is an X-linked recessive disorder (Xh) that is passed through generations and can be traced by using a pedigree.

Charles is a blank box with a Upper X Upper H Upper Y genotype and Marie is a half-filled circle with a X Upper H x h genotype.

What is the probability that a female child of Charles and Marie would suffer from hemophilia?
0 percent
25 percent
50 percent
100 percent

Answers

The probability that a female child of Charles and Marie would suffer from hemophilia is 0 percent.

What are X-linked diseases?

X-linked diseases are diseases whichabre found only on the X chromosomes.

Hemophilia is an X-linked recessive disorder (Xh)

Charles is has the normal X chromosome YXH

Marie is a carrier of the disease XHXh

A cross between YXH and XHXh will not produce any XhXh.

Therefore, the probability that a female child of Charles and Marie would suffer from hemophilia is 0 percent.

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Which two species produce fewer offspring, each of which has a high chance of surviving to maturity?

A. Specialist species
B. Generalist species
C. R-selected species
D. K-selected species

Answers

Answer:

I think the answer is K.

Explanation:

R Species produce more offspring. Whereas K species produce fewer species due to carrying capacity.

I hope this helps! Correct me if I am wrong.


X
-6
-1
0
3
y
-7
1
9
-2
What is the domain of the given function?
O {x|x = -6, -1, 0, 3}
(y ly=-7, -2, 1, 9}
{x|x=-7, -6, -2, -1, 0, 1, 3, 9}
(y ly=-7, -6, -2, -1, 0, 1, 3, 9}
1

Answers

Answer:

-1

Explanation:

(y ly=-7, -6, -2, -1, 0, 1, 3, 9}

1

The cost of renewable energies has increased over the last decade

A. true

B. False

Answers

i believe false :).
b. false. the cost is decreasing

why have 900 megahertz (mhz) industrial, scientific, and medical (ism) band wireless local area networks (wlan) lost favor in comparison to 2.4 gigahertz (ghz) and 5 ghz frequency systems?

Answers

900 MHz devices are more expensive and provide slower data output.

What is wireless local area networks (WLAN)?

WLAN is defined as a wireless distribution of network used for two or more devices.

The industrial, scientific, and medical (ism) band is a WLAN that makes use of radio frequency

for domestic network purposes.

A gigahertz connection delivers more bits per second more than a megahertz connection.

Therefore, 900 MHz cannot be compared with 2.4 gigahertz (ghz) and 5 ghz frequency systems because 900 MHz devices are more expensive and provide slower data output.

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7. Solve the inequality. c 12 > 1 c < 13 c > 11 c > 13 c > 13 A student draws two parabolas on graph paper. Both parabolas cross the x-axis at (-4, 0) and (6, 0). The y-interceptof the first parabola is (0, -12). The y-intercept of the second parabola is (0, -24). What is the positive differencebetween the a values for the two functions that describe the parabolas? Write your answer as a decimal rounded tothe nearest tenth. Example of Exclamation Todays weather map shows the jet stream flowing west to east toward Washington, D.C., at a speed of 70 knots. If the ground speed needs to be 450 knots to make it from Washington to Kansas City on time, what does the planes speed need to be? Factor the binomial expansion. 81x4 648x3 + 1,944x2 2,592x + 1,296 A ball is thrown from the top of the school. The height of the ball (in feet) written interms of the time (in seconds) is modeled by f (t) = -16t + 32t + 48. At what timewill the ball hit the ground? The beginning paragraphs of Barrio Boy give a positive connotation toan egg.rules.adults.children. What did the "flapper" represent for the 1920s' woman?A) more educational opportunitiesB) a challenge to traditional valuesC) changing religious rolesD) greater political influence Select the correct answer.How does the author use text structure in the paragraph to advance her purpose?O A. The author explains the positive effect of owning a pet.O B. The author offers a solution to the problem of pet adoption.O C. The author compares and contrasts companion pets.O D. The author shows how pet ownership has changed over time. Read Shakespeare's "Sonnet 100."Where art thou, Muse, that thou forget'st so longTo speak of that which gives thee all thy might?Spend'st thou thy fury on some worthless song,Darkening thy power to lend base subjects light?Return, forgetful Muse, and straight redeemIn gentle numbers time so idly spent;Sing to the ear that doth thy lays esteemAnd gives thy pen both skill and argument.Rise, resty Muse, my love's sweet face survey,If Time have any wrinkle graven there;If any, be a satire to decay,And make Time's spoils despised every where.Give my love fame faster than Time wastes life;So thou prevent'st his scythe and crooked knife.What is the central idea of the third quatrain?O If you see my love aging, work against it.O Do not be lazy; we are all running out of time.Make fun of time, and turn people against it.Write something to ridicule my love's wrinkles. The chart below shows the three main types of plant tissues and associated tissues.The chart shows the 3 main types of plant tissues and associated tissues. Plant tissue is divided into dermal, ground, and 1. Ground is divided into 2, Collenchyma, 3. 1 is divided into 4 and 5.Which row (A, B, C, or D) best completes the chart above?12345AVascularXylemParenchymaPhloemSclerenchymaBXylemPhloemVascularSclerenchymaParenchymaCParenchymaVascularXylemPhloemSclerenchymaDVascularSclerenchymaParenchymaXylemPhloemABCD Which of the following statements is true of apartheid practices in South Africa before and after 1948?A. Apartheid practices were not common in South Africa until they became official policy in 1948.B. Apartheid practices were not common before or after becoming official policy in 1948.C. Apartheid practices were common but not official policy until they became law in 1948.D. Apartheid practices were more brutal before 1948, but grew milder after 1948 due to government regulations. Which one is it I need to finish this page fast The Dietary Reference Intakes (DRI) committee recommends a diet that provides _____ percent of its calories from carbohydrate. please help thank you ! Please help me with this!!!Sumerian ______________________ recorded information about food, workers, and other things that helped rulers run the cities. The tip of the ______________________ had a triangular shape. It made ______________________ marks in the clay. This writing is called ______________________. Please answer! I will give you the brainliest :) Anemia is a medical condition in which the affected person lacks enough red blood cells. What two effects will such a condition have on the patient? The numbers of suitcases loaded onto various airplanes are an example of which type of data? A company that makes a type of medicine used to treat malaria is changing the dosage, or amount, that it recommends people take. Instead ofone pill per day, the company has found that it is more effective to take two pills per day. What steps would they need to go through before theywould be allowed to change the dosage information on their package?OA They would need to provide data to the FDA and get approval.OB. They would need to call all the pharmacies and ask them to write the new dosage on their bottles.OC. They would need to invite the NIH to their factory to see the process to create the pills.OD. They would need to contact the CDC and tell them about the dosage change.