What is a scientific theory? Choose the best answer.
Select one:

An explanation that's thought up by a scientist

An explanation that's popular among the public

An explanation that makes a lot of sense.

An explanation that is backed up by evidence.

Answers

Answer 1

Answer:

an explanation that is backed up by evidence

Answer 2

Answer:

An explanation that is backed up by evidence.

Explanation:


Related Questions


Find the equation of the parabola with its focus at (6,2) and its directrix y = 0.
A) y = -1/4(x - 6)² + 1

Answers

The equation of the parabola with its focus at (6,2) and its directrix y = 0, is determined as y = 1/4(x - 6)² + 1.

Equation of the parabola

Focus at (6,2) and its directrix y = 0.

Focus equation is given as:  (h, k + c) = (6, 2)

Directrix equation is given as:   y =  k - c = 0

so  h = 6,   k + c = 2,   k - c = 0

Solve  the system :  k + c = 2 and k - c = 0

add the equations together:     k + c + k - c = 2 + 0

2k = 2

k = 1

so   k + c = 2,    

1 + c = 2  

c = 1

4c (y - k) = (x -  h)²

4(1)(y - 1) = (x - 6)²

4(y - 1) = (x - 6)²

4y - 4 = (x - 6)²

4y = (x - 6)² + 4

y = 1/4(x - 6)² + 1

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ou are part of a research group that is attempting to improve on the beneficial genetic modification of golden rice, to further reduce global hunger issues. Which of the following difficulties will you likely encounter?

A. Greater difficulty growing the crops in harsh environments.
B. Allergic reactions to the rice from people who were previously unaffected.
C. More chemical pesticides would be needed to protect them.
D. Price of the rice would increase.

Answers

Price of the rice would increase difficulties will you likely encounter. Thus, the correct option is D.

What is golden rice?

Golden rice gets its name from the beta-carotene that gives it its golden hue. Beta-carotene is not expressed in the endosperm of normal rice, Oryza sativa, the starchiest and largest component of the rice seed and often an off-white hue.

More the cheaper the rate more will be the consumption by people which leads to cut off from disease.

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During inhalation, _____muscles contract to elevate the ribs. During forced exhalation, ______muscles contract to depress the ribs

Answers

External intercostals contract to elevate the ribs during inhalation while internal intercostals contract to depress the ribs during forced exhalation.

Inhalation and exhalation constitute the process of respiration.

While inhalation is simply the act of breathing in, exhalation is the exact opposite, breathing out.

The intercostal muscles are muscles situated in between the ribs of an animal or a person. It is separated into:

external intercostals which are responsible for elevating the ribs when they contract during inhalation andthe intercostal muscles which play a role in depressing the ribs during exhalation.

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Which membranous structures conduct impulses through the sarcoplasm to stimulate the release of calcium?.

Answers

T (or transverse) tubules.

What are enzymes and how were they discovered?

Answers

Un-paraphrased (WILL BE DETECTED BY PLAGIRISM CHECKERS):
By the late 17th and early 18th centuries, the digestion of meat by stomach secretions and the conversion of starch to sugars by plant extracts and saliva were known but the mechanisms by which these occurred had not been identified. French chemist Anselme Payen was the first to discover an enzyme, diastase, in 1833.

Paraphrased (YOU ARE GOOD TO USE THIS, YOU WONT BE PLAGIRISED)

The digestion of meat by stomach secretions and the conversion of starch to sugars by plant extracts and saliva were known by the late 17th and early 18th centuries, but the mechanisms by which these occurred had not been identified. Anselme Payen, a French chemist, was the first to discover an enzyme, diastase, in 1833.

Enzymes are the organic protieneous substances which catalyse chemical reactions in the living organisms, these are also considered as bio catalyst.

In 1833 Anselme Payen discovered the first enzyme, diastase

which one is the odd one out in these sets fern, conifer and moss​

Answers

Answer:

conifer

Explanation:

Mark as brainlest answer

Answer:

conifer

Explanation:

this is because they have a cone like structure

Which of the following is a function of the plasma membrane?
a. breaks down lipids, carbohydrates, and proteins from foods
b. stores water, salt, proteins, and carbohydrates
c. keeps the cell wall in place
d. regulates which materials enter and leave the cell

Answers

It’s either A or C the answer

Why socialist government turn authoritarian

Answers

The reason why socialist governments often turn authoritarian are:

Having too much power eventually corrupts the holder. When resistance builds, they try to suppress it because they feel socialism is the best way.

Why does socialism sometimes become authoritarianism?

Socialist governments tend to have too much power vested in the Executive in order to properly plan the economy. As a result, they often get corrupted because their power is inhibited.

When this corruption leads to inefficiency, authoritarianism is introduced to ensure that the citizens cannot overthrow the government which wants to keep power.

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A ligamentous connection such as an antebrachial interosseous membrane is called a.

Answers

Answer:

syndesmosis

Explanation:

fibrous joint in which two adjacent bones are linked by a strong membrane or ligaments. This definition also applies for the distal tibiofibular syndesmosis, which is a syndesmotic joint formed by two bones and four ligaments.

What happens to the groom ones levels during ovulation?

Answers

The BBT is the temperature at which females are the coolest in a 24-hour period. BBT will increase by 0.5 to 1.0 degree Fahrenheit the day after she ovulate and remain elevated until her next period.

What is ovulation?

When you ovulate, one of your ovaries releases an egg. You are theoretically fertile for five days prior to ovulation and the day of ovulation. However, if you have se-x during the final three days of this six-day window, your chances of becoming pregnant are at their highest.

The vaginal discharge that occasionally shows up in underwear is cervical mucus. She can experience an increase in cervical mucus and a change in its texture in the days leading up to and right after ovulation.

The cervix is softer, higher, moister, and more open during ovulation.

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What is the circulatory system?

A) Temperature Regulator
B) Transport System
C) Immune System Booster
D) Heater

Answers

Answer:

It has to do with the body. So, B

Explanation:

Answer:

B transport system.

Explanation:

The circulatory system, circulates (carries) blood around the body.

which portion of the pituitary gland is highlighted?

Answers

The portion of the pituitary gland which is highlighted (see attachement) is referred to as posterior pituitary.

What is a pituitary gland?

A pituitary gland can be defined as a small, pea-sized endocrine gland that is found under the brain (below the hypothalamus), which is responsible for the secretion of several important hormones directly into the bloodstream of a living organism.

Also, the pituitary gland controls the function of several other endocrine system glands. In this scenario, posterior pituitary is the portion of the pituitary gland which is highlighted in the image attached below.

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Select the correct answer from each drop-down menu. what type of population monitoring method will be best for monitoring the species listed? is an appropriate method to monitor a population of swallows, while is an appropriate method to monitor a population of tortoises.

Answers

The right approaches to population monitoring methods of swallows and tortoises are point counts and line-transect distance sampling, respectively.

For point counts, In order to collect the data required to meet the current study's objectives, one must use field techniques methods for selection, counting, capturing, observing, measuring, and marking individuals chosen from the targeted population.To count or keep track of the birds of the air, point counts are a frequent field technique (birds). The practice involves making observations over a predetermined, set amount of time and keeping track of the number of birds coming from a specific location.While the line-transect distance sampling methods in the field are useful for keeping track of the number of tortoises and is appropriate for controlling and tracking the population.

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What is the innermost layer of an artery wall called?

Answers

According to the research, the tunica intima is the innermost layer of an artery wall.

What is the tunica intima?

It is one of the three layers of an artery wall composed of the endothelium and a subendothelial connective layer.

It is considered the innermost layer, the one that is in contact with the blood, the outer or adventitia is made of connective tissue and a middle layer with muscle fibers.

Therefore, we can conclude that according to the research, the tunica intima is the innermost layer of an artery wall.

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Can someone help me please and thxxx

Answers

Answer:

3) x = 3

Explanation:

Using the Inscribed Angle Theorem:-

31x + 3 = 192/231x = 96 - 3x = 93/31 x = 3

--------——–—---------

To answer this question

   ⇒ must consider what theorem to use

Theorem used:

 ⇒ Inscribed Angle

    ⇒ states that inscribed angles like ∠EFG are half the arc angle

In other words

  [tex]31x+3=\frac{1}{2}*192\\\rm \hookrightarrow 3x+3=96\\\rm \hookrightarrow31x=93\\\rm \hookrightarrow x=3[/tex]

Answer: x = 3

Hope that helps!

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Spontaneous genetic mutations are one cause of cancer. They can happen at any time for various reasons such as exposure to certain carcinogens. Researchers are working to understand more about what causes them. If X is how many mutations there are in a person's body at time Y, X is a ________ random variable.

Answers

If X is how many mutations there are in a person's body at time Y, X is a discrete random variables.

What are discrete random variables?

Discrete random variables are those variables that depends upon the numerical outcomes of a certain random phenomenon.

The X which is the number of mutations that are present in a person's body is dependent on Y which is time that varies.

Therefore, If X is how many mutations there are in a person's body at time Y, X is a discrete random variables.

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Sickle cell is an example of what

Answers

Sickle cell is an example of an autosomal disorder.

What are autosomal disorders?

They are diseases or abnormalities that are genetic in nature and whose alleles are located on non-sex chromosomes or autosomes.

Sickle cell is an autosomal recessive disease that is inherited by getting affected alleles from the two parents.

Autosomal disorders are different from sex-linked disorders. The alleles of sex-linked disorders are located on the sex chromosomes instead of autosomes.

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which statement accurately compares the tundra and the desert

Answers

Answer:

C is the correct answer

Explanation:

C

What is adaptive radiation?
A. the evolution of two species from a single ancestor in a short amount of time
B. the evolution of many species from a single ancestor in a short amount of time
C. the evolution of many species from a single ancestor over a long period of time
D. the evolution of two species from a single ancestor over a long period of time

Answers

Answer:

C. The evolution of many species from a single ancestor over a long period of time

The frequency of a wave does not change as it passes from one medium to another. What will most likely happen if a light wave moves from the air into a solid? The wavelength of the light wave will increase. The speed of the light wave will decrease. The wavelength of the light wave will remain the same. 0 The speed of the light wave will remain the same.

Answers

Answer:

I think the answer is B. The speed of the light wave will decrease.

Explanation:

Light waves travel fastest in empty spaces, and slowest in solids.

I hope this helps!

Answer:

B. The Speed Of The Lightwave Will Be Modified As It Enters Another Medium (State Of Matter)

Explanation:

Got it right on edge

What happens when a phase in the cell cycle does something incorrectly / doesn't do its required tasks, what happens to the cells that are impacted by those errors and what effect does it have on other cells in the cell cycle?

Answers

When a phase in the cell cycle does something incorrectly, mutation occur which leads to cell death or cancer.

What happens when a phase in the cell cycle does something incorrectly?

When a phase in the cell cycle does something incorrectly, then they cannot move to opposite poles in the later phases of mitosis, which result  the cell with extra chromosomes and a daughter cell with missing chromosomes. These mutations can lead cell death, disease or cancer.

So we can conclude that When a phase in the cell cycle does something incorrectly, mutation occur which leads to cell death or cancer.

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What types of animals are prosimians?

Answers

Prosimians are a group of less-developed primates.

What are Prosimians?

They are a group of primates with some less-developed features as compared to other primates.

The more developed primates are referred to as Simians and these include humans, apes, and monkeys.

Prosimians include both living and extinct animals such as the lemur, lorises, and galagos.

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which factor will mostly likely decrease biodiversity? complex population interactions introduced species increased energy availability narrower niches

Answers

The factor that mostly likely decrease biodiversity in a ecosystem is narrower niches because narrower niches does not give way for various organisms to inhabit .

What is biodiversity?

Biodiversity refer to various or different kind of plants and animals present in the environment and their role in their habitat

Therefore, The factor that mostly likely decrease biodiversity is narrower niches

because narrower niches does not give way for various organisms to inhabit.

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The ancestors of elephants inhabited every continent except Antarctica and Australia. But the Asian and African elephants are the only ones to survive. Why?

Answers

Options:

A) Dinosaurs killed all other elephant species.

B) Asian and African elephants killed off other species of elephants.

C) Asian and African elephants adapted well to their environments.

Asian and African elephants adapted well to their environments. Thus, the correct option is C.

Environment of Antarctica is not suitable for elephants why?

The world's coldest location is Antarctica. Additionally, it is the windiest and driest. Almost the entire year, the continent is covered in snow. Due to the extremely harsh temperatures and lack of healthy soil, Antarctica is therefore unsuitable for raising elephants and cultivating crops. Elephants eat grass, while the entire continent of Antarctica is covered in snow. In this database, there are currently 25 (8,17) living elephants located in Australia.

Although they can be found in a variety of environments, including deserts, swamps, and highlands in tropical and subtropical areas of Africa and Asia, they are most frequently found in savannas, grasslands, and woodlands.

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Write about the importance of exothermic reactions in daily life and illustrate the destruction caused by their absence

Answers

Everyday uses of exothermic reactions include self-heating cans and hand warmers. When energy is taken in from the surroundings, this is called an endothermic reaction and the temperature of the surroundings decreases.

s. aureus has been isolated from george’s infected wound. to satisfy koch’s postulates, what would george’s doctor need to do with the isolated s. aureus?

Answers

George's doctor will need to culture the isolated S. aureus to determine if the isolated bacterium is the one responsible for the infection.

What is Koch's postulates?

Robert Koch was a famous microbiologist that made some postulates as follows:

The bacteria must be present in every case of the disease.The bacteria must be isolated from the host with the disease and grown in pure culture.The specific disease must be reproduced when a pure culture of the bacteria is inoculated into a healthy susceptible host.The bacteria must be recoverable from the experimentally infected host

According to this question, S. aureus has been isolated from George’s infected wound.

This means that in accordance with Koch's postulates, George's doctor will need to culture the isolated S. aureus to determine if the isolated bacterium is the one responsible for the infection.

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13. What two sub-processes do NADH and FADH2 cycle between? What do they do at each location?

Answers

NADH and FADH2 cycle is responsible for the production of small amount of energy in the form of ATP.

What occur in the NADH and FADH2 cycle?

FADH2 and NADH are created through reduction-oxidation reactions in the Krebs cycle. This cycle produces small amounts of energy in the form of adenosine triphosphate (ATP), and also responsible for the production of compounds i.e. FADH2 and NADH. NADH produces 3 ATP whereas FADH2 produces 2 ATP molecules

So we can conclude that NADH and FADH2 cycle is responsible for the production of small amount of energy in the form of ATP.

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A species with narrow niches that can survive in a small range of environmental conditions are

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

Answers

Answer:

D. Specialist Species

What is the advantage for species to be specialists, and how can they survive in the presence of opportunistic/generalist species?

In the setting of specialized habitats or unique situations, specialized species exist. When those conditions and surroundings change, they must adapt or go extinct, thus they must survive while they still exist.

When compared to generalists, they have the benefit of efficiency, which increases the likelihood of survival and, hence, reproduction within certain settings or situations. The generalists, on the other hand, have the benefit of being able to survive in a larger variety of circumstances and have a higher probability of doing so.

Cactuses, which are plants adapted to dry environments, are an example of specialization. More generalist plant species would typically outcompete cacti in most habitats on Earth, but very few of such species could endure the harsh conditions of a desert.

Extreme environmental conditions, competition for limited resources, and "evolutionary arms races" are some of the pressures that cause specialization. Cheetahs sprint quickly both because their prey moves quickly and because quicker cheetahs will be more effective hunters and more likely to procreate. The advantage of specialization is clear when seen from the standpoint of catching the next meal on a daily basis.

My key argument is that specialization's benefits must always be viewed in the context of the environment that generated the selective pressure that resulted in specialization. Although experts are specialists because they must be, their specializations put them in danger.

Identify the hormone represented by each letter

Answers

Identify the hormone represented by each letter, in this case, the letter A represents the thyroid glands and letter B represents the parathyroid gland.

What does the thyroid do?

The thyroid is a butterfly-shaped gland that is located in the anterior part of the neck, hugging the windpipe. The hormones produced by it  act on our body and metabolism from our fetal formation to senility.

What is the function of the parathyroid?

The parathyroids are four glands located in the neck, behind the thyroid, whose function is to control the levels of calcium in the blood through the production of parathyroid hormone (PTH).

These two organs have essential functions for the human body responsible for metabolism.

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The first three strata of the epidermis consists of ______ keratinocytes and the most superficial strata contain ______ keratinocytes.

Answers

The first three strata of the epidermis consists of living keratinocytes and the most superficial strata contain dead keratinocytes.

What is epidermis and its function?

The cutin with the wax provides protection against fungi, bacteria and some insects. The main function of the epidermis is the coating, preventing the action of pathogenic agents, reducing injury by mechanical shocks and preventing water loss.

As the epidermis is the most superficial tissue that the body has, in this part there are living and dead cells at the same time.

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Other Questions
Read the excerpt from "Introduction to Poetry" by Billy Collins.I ask them to take poemand hold it up to the lightlike a color slideor press an ear against its hive.Which statement best explains the central idea of these lines?O Poems should be studied in many ways.Poetry readings should take place outside.O Poems are colorful and noisy.Poetry should be shared with friends. Use the property of real numbers to write the expression 2/5 x (-7)x 5/2 A singles tournament had six players. Each player played every other player only once, with no ties. If Helen won 4 games, Ines won 3 games, Janet won 2 games, Kendra won 2 games and Lara won 2 games, how many games did Monica win 5[2(4) + 3 +4] in a verbal expression. A chopstick model of a catapult launches a marshmallow in a classroom. The path of the marshmallow can be modeled by the quadratic y=0.07x2+x+2.2,where y represents the height of the marshmallow, in feet, and x represents the horizontal distance from the point it is launched, in feet.When the marshmallow hits the ground, what is its horizontal distance from the point where it was launched? Solve this system of equations algebraically:y 10 = 11x + x2y 12x = 30The first solution is (4, 18).The second solution is (, ). Read the first paragraph of Economy from Walden.When I wrote the following pages, or rather the bulk of them, I lived alone, in the woods, a mile from any neighbor, in a house which I had built myself, on the shore of Walden Pond, in Concord, Massachusetts, and earned my living by the labor of my hands only. I lived there two years and two months. At present I am a sojourner in civilized life again.Which best describes how this paragraph relates to the rest of Economy?It compares and contrasts the authors beliefs about nature with civilized societys views of nature.It compares and contrasts civilized life with the authors solitary time in the woods.It provides context for the rest of the excerpt by noting that the author no longer agrees with what he wrote.It provides context for the rest of the excerpt by explaining when and where the author wrote it. Asymmetrical balance is a feature of __________. knowing that the client has two risk factors that cannot be modified, which intervention is most important for the nurse to include in the client's plan of care? A prairie house built by Frank Lloyd Wright. The house has rectangular angles, close to the ground, and a bank of windows. The building is made of brick. The house above has an overall __________ emphasis. a. vertical b. horizontal c. diagonal PLS HELP, it was due yesterday. it's about US HISTORY and I think you need to match the cause and effect. HELPPPPP PLSSSS I ONLY HAVE A FEW MINUTES LEFT which experssion gives the distance between the points (2, 5) and (-4, 8) What is the original price of an item that is being charged a tax of 20%, andthe total price is $144?Points 1 Read the following prompt and write your response in the space provided. In President Obama's "Third Annual Back to School Speech," he argues that since young people are the future leaders of the world, they need to prepare themselves to lead. Asses how well President Obama supports his argument. Provide examples of reasons and evidence from the speech to support your assessment Management contracts usually stipulate that multiple choice the contract be annual with renewal options. a fee be paid to the firm providing the management expertise. 30 to 50 percent of sales belong to the licensee. 30 to 50 percent of revenues belong to the licensor. Read the excerpt from Little Women.As they gathered about the table, Mrs. March said, with a particular happy face, Ive got a treat for you after supper.A quick, bright smile went round like a steak of sunshine. Beth clapped her hands, regardless of the biscuit she held, and Jo tossed up her napkin, crying, A letter! A letter! Three cheers for Father!Yes, a nice long letter. He is well, and thinks he shall get through the cold season better than we feared. He sends all sorts of loving wishes for Christmas, and an especial message to you girls, said Mrs. March, patting her pocket as if she had got a treasure there.Hurry and get done! Dont stop to quirk your little finger and simper over your plate, Amy, cried Jo, choking on her tea and dropping her bread, butter side down, on the carpet in her haste to get at the treat.Which detail should be included in a summary of this excerpt?A. Mrs. March says she has a surprise.B. Jo tosses her napkin in the air.C. Mrs. March says the letter is long.D. Jo thinks Amy takes too long to eat. Can someone help with this pls How many 1/4 minutes are there in 3/4 minutes? 24. New crust (oceanic plate) is formed at (4 points)transform plate boundaries.subduction boundaries.O collision boundaries.O divergent plate boundaries.