Peppered moths come in two color variations, as shown below.

Prior to the Industrial Revolution, the majority of the population in England consisted of the light colored variation. The dark colored moth became the dominant variation by the end of the 20th century and remained so for almost 100 years. Today, the light colored variation is dominant again.

What is the best explanation for this?

A. Populations with two variations have a better chance of survival than populations with more.

B. A single variation can be beneficial under some conditions and harmful under other conditions.

C. One variation will always be harmful, and the other will always be beneficial.

D. A single variation can be beneficial in all conditions or harmful in all conditions.

Answers

Answer 1

The answer, I do believe, should be option B. Here's my reasoning...

The question doesn't ask about a bunch of other species and how the moth variations relate to the survivability of many species, so I think that rules out option A. Option C is too black-and-white, because the explanation above simply states how a moth was able to survive better on different color variations. The last option, D, is also too black-and-white. So I believe that the answer is B, because sometimes, like prior to the Industrial Revolution, the one variation is better (as seen in the upswing of dominance in different variations).


Related Questions

what term means living matter

Answers

Answer:

Living’ is something that is alive, something that can grow, move, reproduce, respire and carry out various cellular activities. To understand what is living, we need to look into the features of a living thing in detail. What is Living? Living things are made up of cells and are capable of carrying out various cellular activities.

Explanation:

it would be a great help

Answers

Answer:

easy and simple is B

Explanation:

:)

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A student used individuals plastic blocks that snap together to build four walls and a roof. Then, the student connected the walls together, put on the roof, and added a plastic door in one of the walls to make a house. If we used this model to represent the organization of living things and we let the house represent an organ, what do the individual plastic blocks represent?


A. Cells

B. Tissues

C. Organelles

D. Organisms

Answers

Answer:

tissues

Explanation:

I would probably use tissues because the tissue is a biological organizational level between cells and a complete organ. I hope this helps...

Review the age structure diagram below:

Breakdown of Chinese population by age categories and gender. The age groupings are represented in intervals of 5, starting with 0-4 years old at the bottom, and concluding with 85+ years at the top. The x-axis represents percentage of population from one to five on each side. Males are on the left, and females are on the right.
© 2021 Census.gov

In which category do you see the greatest difference between males and females?

Ages 0-4
Ages 30-34
Ages 45-49
Ages 85 and up

Answers

Answer:

Ages 30-34. Look at the difference in a detailed way

:

In addition to natural factors, human activity can also alter ecosystems. Conduct research on a human activity that
currently affects or can theoretically affect your chosen ecosystem. Use your food web model to explain how this
change can affect the competition for food resources.


Answers

The human activities in addition to natural factors that can alter the terrestrial ecosystem is deforestation.

The effects of deforestation on food web

Deforestation is a the clearing of trees in a large area of land which can be purposeful or by nature.

Human activities that leads to clearing of trees include the following:

agricultural expansion,

cattle breeding,

timber extraction,

mining,

oil extraction,

dam construction and infrastructure development.

One of the negative effects of deforestation on food web is the reduction in food availablity. This is so because of the loss of biodiversity that are source of food to man.

The human activities in addition to natural factors that can alter the terrestrial ecosystem is deforestation.

Learn more about deforestation here:

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What is the structure and function of a gene?

A section of RNA that builds proteins.

A protein that speeds up chemical reactions.

A section of a chromosome that contains instructions for building a protein.

A chromosome that contains instructions for building DNA.

Please help ASAP ill give brainliest to the correct answer!

Answers

Answer:

C

Explanation:

<3

A section of a chromosome that contains instructions for building a protein.

What is a gene?

A gene is a specific section of DNA, a long molecule that carries genetic information, located on a chromosome. Genes contain the instructions that cells use to make functional molecules called proteins.

Proteins are large molecules that perform a wide variety of functions in the body, including speeding up chemical reactions (as enzymes), building and repairing tissues, and helping to fight infections.

The process by which genetic information in a gene is used to build a protein is called gene expression.

Thus, genes play a critical role in determining the traits and characteristics of an organism, and they are essential for the proper functioning of cells and tissues in the body.

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Which of the following describes a phenomenon that occurs when we observe plants that wilt?

A. The roots begin to rot, causing them to no longer uptake water.
B. The xylem releases all its water.
C. The stomata close, cutting off transpiration and gas exchange.
D. The plant begins absorbing oxygen and releasing carbon dioxide into the atmosphere.

Answers

The xylem releases all its water when we observe plants that wilt.

Answer: Option C

Explanation:

Wilting is a process where the plant loses its rigidity and droops down. To understand it better the water is absorbed through the roots and aids in the functioning of the plant. The excessive water is stored inside the vacuole when during water scarcity releases water.

But during the drought conditions the water is lost completely causing the leaves to shrink. The xylem starts releasing all its water leaving a less surface area. Hence the leaf shrinks and wilting occurs.

In your biology class, there was a discussion about climate change. You learned that human activities are changing the composition of Earth's atmosphere, and that levels of greenhouse gases like carbon dioxide (CO2) have been increasing sincepre-industrial times. Your teacher stated that the atmospheric buildup of CO, and other greenhouse gases is largely the result of human activities such as the burning of fossil fuels. One student in your class disagreed. He said that the increase in human populations worldwide is causing the higher level of CO,. His argument is that as people exhale, they release CO, from cellular respiration; more people, more COy. Your class erupted in discussion, and your teacher has asked that you choose a side and research the argument. Working in small groups, create short documentary (3-5 minutes) about how respiration and fossil fuel burning are similar processes. Use data and evidence from peer-reviewed sources to make a claim regarding whether or not one (or both) of these processes can be the root cause of climate change.

Answers

Answer:

Below

Explanation:

While your classmate is correct in that respiration does cause the release of CO2, it's inaccurate to say that it has contributed to climate change, and it's especially inaccurate to say it has contributed to the same extend as the use of fossil fuels.

Let's break it down shall we:

When a human breathes, they release 35,000 to 50,000 ppm (parts per million) of CO2 with every exhale. On average, we breathe out 20,000 times a day. Multiply that by the amount of people on Earth, about 7.8 billion, you get 1.716x10^14 breaths a day. Therefore, you have that times 50,000 ppm of CO2 released. That sure is a lot, however, let's look at how much carbon dioxide is released from coal alone in a day. In general, the world consumes over 8.5 million tons of coal a year, and in the US alone 14,000 tons are burnt in one day. When you burn one pound of coal, around 2 pounds of CO2 is released, as the carbon of the coal mixes with the oxygen requiring it to burn. Therefore, 28,000 tons of CO2 is put into the environment from coal alone (not even including all of the other fossil fuels like natural gas and oil), showing how extensive the CO2 burning of fossil fuels is.

Additionally, I want to address the point of increased human population leading to more CO2 from respiration. Consider this, with more people, there is more need for agriculture. Aka, we need to grow more plants in order to sustain our growing population. Plants grow using photosynthesis which needs Carbon Dioxide to begin. Therefore, as our population grows, the amount of CO2 taken from our atmosphere in order to sustain our population actually shows that growing population doesn't necessarily relate to more CO2 from exhalation overall.

what molecules do plants take in for their energy needs

Answers

Answer:

Photosynthesis is the process by which plants produce food. Plants use their leaves to trap light energy during photosynthesis. Plants use the sun's energy to convert water and carbon dioxide into glucose, a sugar. Plants use glucose for energy and to manufacture cellulose and starch, among other things.

Another explanation:

Also, photosynthesis is a chemical reaction that takes place in a plant's leaves and requires both chlorophyll and light energy. Chlorophyll in leaves aids in the conversion of carbon dioxide and water into oxygen and glucose during photosynthesis. Glucose serves as a critical source of nutrition for the plant.

How do nucleic acids carry information?​

Answers

Read in cells to make the RNA and proteins by which living things function.

At an incineration facility, 90% of the garbage's volume is lost. The last 10% is in the form of _______.

A: Plasma
B: Ash
C: Sludge
D: Steam

Answers

At an incineration facility, 90% of the garbage's volume is lost. The last 10% is in the form of Ash.

What do you mean by Incineration facility?

An Incineration facility may be defined as a facility that tolerates municipal solid wastes and disposes of them through the method of combustion.

When this facility tolerates the wastes, approximately 80 to 90% of its volume gets lost. The remaining is left in the form of ash. It is formed just bottom of the incinerator unit.

Therefore, it is mentioned above.

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Which characteristic did you use to identify the tree

Answers

Answer:

The most commom tool used to identify a tree is the LEAF - its unique shape, its margin, its colours, its venetion and how the leaves are arranged on the branch, are vital keys to identify a tree. The other most obvious key to identifying a tree is its FLOWERS, if it any.

Explanation:

Which nutrient helps to regulate body temperature?
a. Carbohydrates
b. Minerals
c. Proteins
d. Water

Answers

Answer:

The answer is D

Explanation:

Did some quick research :)

Answer: water ``````````````````````````````````````````````

Sophia wrote an equation to represent the revenue of a movie theater for one day. She let x represent the number of child tickets sold and y represent the number of adult tickets sold. If a child ticket costs $4, an adult ticket costs $6, and the total revenue for the day was $420, which equation could Sophia use to represent the number of child and adult tickets that were sold?
6 x + 4 y = 420
4 x + 6 y = 420
4 x + 6 y = 840
6 x + 4 y = 840

Answers

Answer:

4x + 6y = 420

Explanation:

since x is number of child tickets and y is adult tickets, and $4 is the cost of child tickets and $6 is the cost of adult tickets, that eliminates A and D.

The question also states "for one day", so that elimates C, which C is the equation for two days.

This leaves 4x + 6y = 420

I don’t understand what is happening in statistics this week can someone help amswer

Answers

Answer:

For bio?

Explanation:

why is fruit cultivation growing day by day?​

Answers

As people of this generation are unhealthy due to lack of proper nutrition,just to gain healthy lifestyle fruit cultivation is growing day by day.

Blood type in humans is determined by multiple alleles. A cross between two individuals is shown in the Punnett square below. What must the phenotype of the parents be to produce the results shown?

Answers

Answer:

top of square would be AB

left of square would be AO


Which position must the moon be in for you to see a full moon on Earth?

Answers

Answer:

the entire day side of the moon.

!!!!! Which of the following statements best describes the climate of an area rather than its weather conditions?
A) The summers are hot and humid
B) The temperature at noon was 86 F
C) Total rainfall on April 9 was 2 inches.
D) Strong wind are expected tomorrow evening.

Answers

D)Strong wind are expected tomorrow evening.

Explain symbiotic relationship with examples. ​

Answers

Answer:

the first thing that came to mind for me was marriage between a husband and his wife. they take care or each other. if one is sick, the other helps them to feel better. if one needs attention, the other when possible will give it to their spouse. in the long-run, the husband will be able to help his wife, and likewise, the wife will be able to help her husband.

hope this helps :)

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Is it true that it requires ATP to carry NADH molecules into the mitochondria?

Answers

Answer:

NADH creates ATP

Explanation:

Question 2 of 10
Which best describes the ecosystems on Earth?
A. There are very few types of ecosystems on Earth.
B. Earth has mostly rain forest ecosystems.
C. Ecosystems do not interact with each other.
O D. Separate ecosystems can affect each other.

Answers

Answer:

D. Separate ecosystems can affect each other.

I think the Answer is C.

Explanation:

The answer is C because if you think about it a desert does not affect the rainforest, or vise versa.

Three different types of bipedialism

Answers

Answer:

Types of bipedal movement include walking, running, and hopping.

5.) Morgan buys a male python from a snake dealer who tells him that the snake carries the albino allele. Morgan mates the snake with an albino female, and ten normally pigmented offspring are produced with zero albino offspring. Morgan rushes back to the snake dealer and demands his money back stating that the male he bought is not heterozygous for the albino allele because all of its offspring had normal pigmentation. Is Morgan’s position supported by genetic theory? Why?

Answers

From the illustration, Morgan's claim could be valid and his position is supported by genetic theory.

Dominant/recessive alleles

It can be inferred from the claim of the snake dealer that albinism in male python is a recessive trait. If this claim is true, let us assume that the albino allele is represented by b and the alternate form is B.

The genotype of the snake Morgan bought will be Bb as claimed by the dealer.

Morgan mated Bb snake with an albino snake which would be bb.

              Bb    x    bb

             Bb   Bb   bb   bb

Thus, the mating should have produced albino to non-albino snakes in the ratio 1:1.

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List three things that are limiting factors on the growth of a population.

Answers

Answer:

in my opnion, in the natural world, limiting factors like the availability of food, water, shelter and spacecan change animal and plant populations. Other limiting factors, like competition for resources, predation and disease can also impact populations.

Explanation:

What are all the boundaries

Answers

Answer:

divergent, convergent, and transform plate boundaries.

Please give brainliest if this helps

Margaret tells her friends that she caught a fish called Salmo salar. What genus does the fish belong
Explain how you know.

Answers

It belongs to the genus Salmo. As the binomial naming system states that the scientific name of an organism is made up of two parts starting with the genus (always given a capital letter) and followed by the species (starting with a lower case letter)

Over the past 50 years, the size of the human population

Select one:
a.
stayed about the same.
b.
increased by 1 billion.
c.
more than doubled.

d.
none of these.

Answers

The answer is

B.increased by 1 billion
b. Increased by 1 billion

14. Which words from the passage show the author's bias toward monarch butterflies? A "Eventually, monarchs reach homes as far north as Canada." B "Most monarch butterflies never live more than two months." c "These beautiful creatures are amazing to watch..." D "They beat their wings slowly and glide so they do not tire too easily."​

Answers

Answer: C: "These beautiful creatures are amazing to watch."

Explanation: Bias is where an author adds their personal opinion on a topic such as this one on monarch butterflies.  Sometimes, authors use bias and it gets away from the facts and the credibility that the topic should bring.  In option C, the words "beautiful" and "amazing to watch" steers the reader away from the actual topic with their personal opinions.  The other options from the passage include facts about the monarch butterflies and resisting the urge to add comments about how beautiful or interesting they are.

Hope this helps! :)

Are food molecules found in plant food?

Answers

Answer:

No

Explanation:

from what I learned food hydroponics plant food do not have food molecules inside of them. but only certain parts might have molecules inside.

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negative fractions on the number line 1 Any electricity-charged object creates an electric field. Walking across the carpet in wool socks can create an electric charge. This observation is evidence for which characteristics of electrical forces? Which term refers to a nation's transportation and communications networks, power generating facilities, educational institutions, and legal, economic, and financial systems?a. capital stockb. infrastructurec. public sectord. utilitiesWhich statement is not true?a. Price signals distorted by extreme inflation or deflation lead to uncertainty and lower the ability of citizens to make good decisions.b. Countries with relatively large public sector shares in the economy have the highest growth rates in GDP per capita.c. Establishing and protecting property rights are key elements that promote economic growth.d. The legal enforcement of contracts promotes economic growth. I'm going to highschool in 7 weeks and I was wondering how I would be able to get some friends. I think I'm socially awkward and don't know what to talk about Read the passage:Adult sea otters spend more than a third of their day grooming their fur. This isn't for vanity; it's for survival. Unlike most sea mammals, sea otters do not have an inner layer of fat to protect them from the cold waters. These creatures rely on their dense fur instead to protect them from the often freezing temperatures. Sea otters have one of the thickest furs in all of the animal kingdom. An adult sea otter's coat can contain up to 1 billion individual hairs! These hairs form a protective, waterproof layer, which traps air and provides insulation. It is crucial that a sea otter's fur is kept clean to maintain this insulating layer between the water and their skin.Select the best text feature to support the passage. An animation of a sea otter eating a clam An interactive mind map with information about different tools that sea otters use A pie chart showing how many different animals are located in the Pacific Ocean A video showing how sea otters clean their fur please help me answer this question!!!! What is the answer? How much did sharecroppersgenerally earn working on someoneelse's farm?I in your opinion could a butterfly be an offspring of an ant? explain. GIVING BRAINLIEST!! need this rlly soon thank you so much! Pls help me look at the picture for the question pls Think about the Article. Why did Civil War soldiers playbaseball?A. Baseball was a popular game in America.B. Soldiers got bored during their free time.C. Soldiers already had baseball equipment.D. Baseball was part of training for battles.SUBMIT For which value of theta is sine theta = negative 1?A unit circle is shown. A radius with length 1 forms angle theta in the first quadrant.StartFraction pi Over 2 EndFractionPiStartFraction 3 pi Over 2 EndFraction2 pior (A.K.A)For which value of is sin = -1?A. /2B. C. 3/2D. 2 Solve the problem.Two cylindrical cans of beef stew sell for the same price. One can has a diameter of 6 inches and aheight of 4 inches. The other has a diameter of 4 inches and a height of 6 inches. Which can containsmore stew and is therefore, a better buy? Most water is reabsorbed from the filtrate by which region of the nephron?. describe the most caring thing that a person has done for you D. Calculate the electric force (F.) between an electron andproton that are 5.29 x 10-11 meters apart. Q4H: The question is in the picture below (please show work) : Which of the following best describes theideals of cutthroat competition?A. A company selling a product higher than its competitorB. A business filing for bankruptcyC. A business doing anything to eliminate theircompetitionD. A business donating most of their profits to charity What connotation does the word persecution have?