Validity of an experiment is based upon:
A. Using a control group.
B. Performing a fair test in which only the independent variable affects the dependent variable.
OC. Using multiple independent variables.
D. Performing a fair test, in which only the dependent variable affects the independent variable.


A
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Answers

Answer 1

Answer:

performing a fair test, in which only the dependent variable affects the independent variable


Related Questions

If the population of poison dart frogs in this rain forest community were to disappear, which of these populations would be most likely to increase?
A: Fruit bat
B: Sloth
C: Beetle
D: Strangler fig

Answers

Answer:

c

Explanation:

the beetles fall prey to the poison dart from so if they went extinct they wouldn't be a threat to the beetles population

Explain why genetic diversity is a good principle for secure development. Cite an example of lack of diversity that has had or can have a negative impact on security.

Answers

Answer:

Genetic diversity is a good principle for secure development because it is critical for a population to adapt to changing environments. It helps maintain the health of a population.

Explanation:

Genetic Diversity refers to the range of different inherited traits within a species. In a species with high genetic diversity, there would be many individuals with a wide variety of different traits.

Mutations are important to genetic diversity because it creates a new DNA sequence for a particular gene, creating a new allele. This is important because including alleles that are diverse may be valuable in resisting diseases, pests, and other stresses

Genetic diversity is a good principle for secure development because it ensures the chances of adaptation in living organisms with respect to changing environmental conditions.

What is Genetic diversity?

Genetic diversity may be defined as the total number of genetic characteristics in the genetic makeup of a species. It serves as a way for populations to adapt to changing environments. It facilitates the survival of particular species.

A lack of diversity may have a negative impact on security. This can be understood by the example that if there were not many variables seen in the Darwin finches in the Galapagos islands, more birds feel the scarcity of food and due to this, they have died and become extinct from nature.

Therefore, with more genetic variation, it is more likely that some individuals in a population will possess variations of alleles that are suited for the environment.

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What is the overall net gain of atp in aerobic respiration per one molecule of glucose?.

Answers

Answer:

38 ATP MOLECULES

Explanation:

Answer:

The answer is C.) between 30-40

Explanation:

Pietro has two dogs that are related, and he wants to understand why one of the dogs has tan fur and the other has brown fur.

Answers

Because of codominance………..

Which order in the taxonomic table is most distantly related to the others? explain how you know. (2pts)

Answers

The organism in the attached taxonomic chart that is related distantly from others is Organism A - Plant.

What is a taxonomic table?

A taxonomic table or chart in biology is a table that is used to arrange and show the relationship between living things.

The organism (plant) is the most distant because it belongs to the Kingdom  Plantae while the others are in the Kingdom Animalia.

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Which factor can decrease the rate of a chemical reaction?
A low activation energy
B high pressure
C low temperature
D high concentration of enzyme

Answers

(c)Low Temperature of the Reactants can decrease the rate of a chemical reaction.

How temperature effects the rate of a chemical reaction

Chemical reactions typically occur faster at higher temperatures. Food can spoil quickly when left on the kitchen counter. However, the lower temperature inside of a refrigerator slows that process so that the same food remains fresh for days. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision.Thus decrease in the temperature of a reaction can help in decreasing the rate of a chemical reaction.Lower the temperature lower the chemical reaction rate.

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Compare the origins of the external and internal iliac arteries of the fetal pig with those of the human.

Answers

The comparison between the origins of the external and internal iliac arteries of the fetal pig with those of the human are as explained below.

What are the origins of the arteries?

In a human beings, it is well known that it is the aorta that undergoes division to form two common iliac arteries which give rise to external and internal iliac arteries.

However, In the pig it is different as the aorta undergoes division to form the external iliac artery while the internal iliac artery branches out from the aorta independent of that division

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What observation led Darwin to believe that the A. Demarlii is
terrestrial?
O They slowly crawl along the ground.
O They are found only in the center of the island.
O They have yellow-orange bellies.
O They weigh between ten and fifteen pounds.

Answers

Answer:

Explanation:

hi!

I think it is A

terrestial animals are animals that live on land ...it could be B but terrestrial animals are not only found on islands and A days they crawl in the GROUND

if you ask me I think it is tricky question on its own

hope it helps

Answer:

It is they are only found in the center of the island

Explanation:

Cells are for tissues as organs are to

Answers

Answer:

Your answer is organ systems.

The genotype for being a red flower is RR, and the genotype for being a white flower is WW. If the colour of the flower is an example of incomplete dominance, use Punnet squares to show the ratio of the phenotypes in the F1 and F2 generations if you cross a red and a white flower.

Answers

Answer:

Explanation:

The F[tex]_1[/tex] and F[tex]_2[/tex] Generations are drawn in Punnett squares below. Please excuse the messy drawings.

Ratios:

F1 Generation:

RW - Red and White Cross - 4/4 = 100%

F2 Generation:

RR - Red only - 1/4 = 25%

RW - Red and White Cross - 2/4 = 50%

WW - White only - 1/4 = 25%

Ecology always considered the atoms in an ecosystem. True False​

Answers

The statement 'Ecology always considered the atoms in an ecosystem' is False​.

What is Ecology?

Ecology can be defined as the integral study of biotic and abiotic factors interacting with each other in an ecosystem.

Although atoms are an integral component of all living organisms and non-living entities it do not involve the study of ecology.

In conclusion, the statement 'Ecology always considered the atoms in an ecosystem' is False​.

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What are the defining characteristics of amphibians?

Answers

Amphibians are vertebrates.Their skin is smooth and slimy.Amphibians breathe through their skin, as well as their lungs in some cases.Amphibians are cold-blooded.They have a complex life cycle (larval and adult stages).Many species of amphibians vocalize.

Amphibians represent a group of vertebrates that require water to survive.

Amphibians

They are one of the major divisions of vertebrates along with fishes, birds, and mammals.

In addition to possessing the basic features of vertebrates, amphibians have the following characteristics:

They are cold-bloodedThey can breathe through their skin as well as using lungsThey need water for survivalReproduction is by laying eggs that are fertilized externallyThey are mostly carnivorous

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Help! I have already reed it and I cant figer it out.

Go to the following website. Prepare a short essay on the website describing the information provided and the purpose of this information.

https://www.genome.gov/About-Genomics/Introduction-to-Genomics

Answers

A short essay on the website describing the information provided and the purpose of this information about the genome is given Genomes are product of DNA, a very massive molecule that looks as if a lengthy, twisted ladder.

What does genome appearance like?

If all of the DNA from a single human cell turned into stretched-out end-to-end, it'd make a six-foot-lengthy strand created from a six billion letter code. It’s difficult to assume how that a good deal DNA may be packed right into a cell nucleus, that's so small it could simplest be visible with a specialized microscope.

DNA is examined like a code. This code is made from 4 styles of chemical constructing blocks, adenine, thymine, cytosine, and guanine, abbreviated with the letters A, T, C, and G. The order of the letters on this code permits DNA to characteristic in exceptional ways. The code modifications barely from individual to individual to assist make you who you are.

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Which of the following is a decomposer
A. Worm
B. Banana
C. Ferm
D. Wolf

Answers

Answer:

A

Explanation:

worms eat compost burried underground.

Worm because they break down and recycle matter from dead plants and animals and return it back it to the soil.

Heat is transferred to two different solids, A and B, at the same rate. Both A and B are initially at the same temperature. The mass of A is 4-times that of B, while the specific heat capacity of B is twice that of A. After 5 minutes of heating, which of the following statements is correct?

a) The temperature of B is twice that of A

b) The two are at the same temperature

c) The change in the temperature of A is half that of B

d) The change in the temperature of A is 4-times that of B

Answers

The two solids are at the same temperature

Savannah wraps some gifts and then brings them to the post office where they are delivered to people in different parts of the country. Which organelle is Savannah most like?

Answers

Answer: The Golgi body

Explanation: it is most known to label and send packages

What does an Epidemiologist study?
A. Diseases
B. Plants
C. The Epidermis
D. Insects

Answers

Answer:

Epidemiologists study outbreaks of diseases, the causes, locations, and how various communities are affected

More information -

TYPES OF EPIDEMIOLOGOST

1) infection control

2) Pharmaceutical

3) Medical

4).Infectious Disease

5). field

6) Molecular

7).Veterinary

Pulmonary edema and impaired ventilation occur during.

Answers

Pulmonary edema and impaired ventilation occur during cardiogenic shock.

What is cardiogenic shock?

Cardiogenic shock is a type of shock that occurs when the heart is unable to pump enough blood that would be enough for the whole body.

The clinical manifestations of cardiogenic shock include:

Pulmonary edema and

impaired ventilation

Pulmonary edema is the accumulation of fluid in the lungs while impaired ventilation which is unregulated intake and removal of oxygen and carbondioxide respectively from the body.

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Explain how the circulatory system is able to transport the blood under high pressure from the heart to the rest of the body

Answers

Transport of blood under high pressure is done through the concerted efforts of the heart and arteries.

The circulatory system is the network of the heart, arteries, veins, and capillaries responsible for the movement of blood around the body.

Transporting blood under high pressure can be explained in the following steps:

Contraction of the heart ventricles creates blood under high pressureHigh pressured blood is removed from the heart through the arteries. In addition, the arteries are able to contract and expand, thus are elasticThe lumen of the arteries is narrow thus helping in maintaining high pressure

As a result of the above, the high pressure of blood is maintained and transported to the extremities of the body.

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a ________ is a very large general-purpose computer that is capable of performing very many functions as if these are done simultaneously, and storing extremely large amounts of data.

Answers

The mainframe computer is a very large general-purpose computer that is capable of performing very many functions as if these are done simultaneously, and storing extremely large amounts of data.

What are mainframe computers?

Mainframe computers are computers used primarily by large organizations for delicate applications like processing bulk data.

They  are known for their large size, amount of storage, fast processing power and high level of reliability in results.

Thus, the mainframe computer is a very large general-purpose computer that is capable of performing very many functions as if these are done simultaneously, and storing extremely large amounts of data.

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Sometimes when organisms evolve, it gives rise to multiple species that can coexist simultaneously. Give an example supporting this statement.
need answer asap

Answers

The finches may have speciated from the  Galápagos finch and now occupy different habitats.

What is speciation?

The term speciation has to do with a type of evolution that gives rise to new organisms from existing ones. It is common in the world today. These ne organisms all tend to coexist with each but may not be on the same habitat.

For instance, the finches may have speciated from the  Galápagos finch and now occupy different habitats.

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meat, fruits, and vegetables could be contaminated withe. colistrains toxic to humans when they come in contact with animal ____

Answers

Meat, fruits, and vegetables could be contaminated withe. colistrains toxic to humans when they come in contact with animal feces, urine and blood.

What is contamination?

Contamination us the process in which food materials, water or pure substances become impure or infected when it come in contact with impurities or microorganisms waste products.

Therefore, Meat, fruits, and vegetables could be contaminated withe. colistrains toxic to humans when they come in contact with animal feces, urine and blood.

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the enzyme pgh synthase contains two different functionalities, a __________ that uses two molecules of oxygen as substrates and __________ which performs a 2 electron reduction.

Answers

The enzyme PGH synthase contains two different functionalities, a cyclooxygenase that uses two molecules of oxygen as substrates and peroxidase.

What is PGH synthase?

Prostaglandin-endop_eroxide synthase 2 (PGH) is an enzyme that has catalytic activity as peroxidase.

A peroxidase enzyme is a catalyst that converts peroxide which is very reactive to oxygen and water.

In conclusion, the enzyme PGH synthase contains two different functionalities, a cyclooxygenase that uses two molecules of oxygen as substrates and peroxidase.

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What is the relationship between biodiversity and an ecosystem's ability to withstand change?
a. closely related
b. directly proportional
c. inversely proportional
d. there is no relationship

Answers

Answer:

c

Explanation:

Inversely proportional

Preservation of Habitats - Everglades NP, FL. North of the park border, if developers or farmers drain and utilize this land, what will happen to the source of water for the Everglades, and therefore to the ecosystem of the Everglades

Answers

Farmers draining and utilizing the land the Everglades will dry up the source of the water of the Everglades and disrupt the ecosystem of the Everglades.

What is a habitat?

A habitat is an area where living organisms are found and make their home.

The Everglades is an wetland habitat where the land is covered by water most times of the year.

Farmers draining and utilizing the land of the Everglades will result in the source of the water of the Everglades drying which will disrupt the ecosystem of the Everglades.

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A culture of living cells includes a solution called a

Answers

Answer:

C) medium

Explanation:

medium can be solid, semi-solid or liquid

mediums are designed to grow living cells of plants, animals, humans and microbes

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When excessive salt, chemicals, and other runoff enters local streams, what types of effects can this have on the ecosystems?

Answers

When excessive salt, chemicals, and other runoff enters local streams, it will have a negative effect on the ecosystems by causing pollution.

How does water pollution get into runoff?

Pollution refers to the contamination of the air, soil, or water bodies due to the accumulation of contaminants as above described.

Runoff may lead to the accumulation of pollutants on the water and therefore it may have a negative effect on the ecosystem.

In conclusion, when excessive salt, chemicals, and other runoff enters local streams, it will have a negative effect on the ecosystems by causing pollution.

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Question 11 of 30
Which of the following factors affecting population growth is density
independent?

Answers

Answer:Density-independent limiting factors affect all populations the same, regardless of population size. Density-dependent limiting factors include disease, parasites, competition for food, water, and shelter, and predation. Density-independent limiting factors include natural disasters, climate, and human activity.

Explanation:

Which pattern is caused by fire burning upward

Pour patterns
V-pattern
Rundown pattern
Inverted cone

Please only answer if you know

Answers

V-pattern caused by fire burning upward. Thus, the correct option is B.

What do V patterns in burn mean?

V-Patterns: Because fire burns up in a V-shape, a fire that starts at an outlet next to a wall will leave a char pattern that will help identify the source. A fire that is hotter than usual, such as one aided by an accelerant, may have an extremely narrow V-shape.

The observable or quantifiable physical changes or recognisable shapes produced by a fire effect or combination of fire effects are known as fire patterns, sometimes known as burn patterns. The changes that occur in or on a substance as a result of exposure to fire are known as fire effects.

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why does dna move through an agarose gel

Answers

DNA move through an agarose gel because DNA molecules are negatively charged due to the presence of phosphate groups in their sugar-phosphate backbone which make them to move toward the positive charge in the agarose gel.

What is DNA?

Deoxyribonucleic acid or DNA is a protein molecule that us found in the nucleus of a cells which carry the genetic components or content of the cell and are transfer from parent to tye offspring.

Therefore, DNA move through an agarose gel because DNA molecules are negatively charged due to the presence of phosphate groups in their sugar-phosphate backbone which make them to move toward the positive charge in the agarose gel.

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When independent stock transfer agents are not employed and the corporation issues its own stock and maintains stock records, canceled stock certificates should Multiple Choice Not be defaced but be segregated from other stock certificates and retained in a canceled certificates file. Be destroyed to prevent fraudulent reissuance. Be defaced to prevent reissuance and attached to their corresponding stubs. Be defaced and sent to the secretary of state. The function y = f(x) is graphed below. What is the average rate of change of thefunction f(x) on the interval -3 x -1? You are walking directly away from your house.You are 5 miles away from your house whenyou start walking, so you can determine yourdistance from your house by adding 5 to thenumber of miles you have walked. In theequation below, a represents the number ofmiles you have walked, and y represents yourdistance from home in miles.The relationship between these two variablescan be expressed by the following equation:y = x + 5Identify the dependent and independentvariables.Your distancefrom homeNumber ofmiles youwalkDependentvariableIndependentvariable PLS HELP I DONT KNOWWW!! A circle with center 0 and radius 5 has a central angle X O Y . If m X Y = 60 , what is the length of chord X Y ? Round your answer to the nearest whole number. Calculate the unpaid balance, finance charge, and new balance using the unpaid balance method. Note: Interest rate is given as a monthly rate Previous balance:$179.32Payments/credits:$85.00Unpaid balance:$Monthly rate:1.25%Finance charge:$New purchases=$117.42New balance=$ Mathis is working on a dissertation involving the religious practices of the Aztec empire he wants to visit areas that are related to his field of study which regions of North America would be the best place for her to visit show that 8/15 plus 3/10 equals 5/6 Read this excerpt from "The World on Turtle's Back."Without knowing it, the right and left-handed twins built balance into the world. The plant-eating animals createdby the right-handed twin balanced out the meat-eating animals created by the left-handed twin. And so the worldthrived, and this was good.Which statement best describes the purpose of this excerpt?to describe who created plant- and meat-eating animalsto explain that some animals are good and others are evilto explain how balance came to exist in the natural worldto describe two different kinds of animals found in the world I need help with dis math problem (img included) Margo borrows $600, agreeing to pay it back with 7% annual interest after 8 months. How much interest will she pay? Mrs. Reynolds is in her Medicare initial coverage election period (ICEP) and the date of her entitlement to Part A and B has already occurred. Mrs. Reynolds has just signed up for a Medicare Advantage plan on the second of the month. She is leaving for vacation in two weeks and wants to know if her new coverage will start before she leaves. What should you tell her? Which substance is an example of organic matter? Look at the text below and correct the punctuation mistakes. There are 3 in total. Farmers across britain are being paid to rewild parts of their land in an effort to give local wildlife a better future. But what is rewilding. Its the process of letting land return to its natural state so that animals such as foxes hedgehogs and badgers can live in newly formed habitats. Angela is an electrical engineer who is testing the voltage of a circuit given a certain current and resistance. she uses the following formula to calculate voltage: the circuit she tests has a current of 3 + j 4 amps and a resistance of 4 - j 6 ohms. what is the voltage of the circuit? G E Which of the following segments is tangent to the circle ? 1) overline HL 2 ) overline DE 3 overline FG 4 ) overline AC A client who experienced shock remains unstable. Which medication classes would the nurse anticipate to be ordered to prevent or minimize stress ulcers? select all that apply Outline the steps for logging into E-mail account An explanation of misfortune based on the belief that certain individuals possess an innate, psychic power capable of causing harm, including sickness and death, is called please help!!!!!!!!!!!!!!!!!!!!!!