Dr. Kettlewelll predicted that clean forests would have _____________ colored moths, and polluted forests would have _________ colored moths.

Answers

Answer 1

Answer:

Kettlewell thought that if natural selection caused the change in the moth population, the following must be true: Heavily polluted forests will have mostly dark peppered moths. Clean forests will have mostly light peppered moths. Dark moths resting on light trees are more likely than light moths to be eaten by birds.

Answer 2

Dr. Kettlewall predicted that clean forests would have light-colored moths and polluted forests would have dark-colored moths. This is an example of natural selection.

What is natural selection?

Natural selection is a phenomenon in which the fittest individual is chosen by nature. The animal can live and reproduce in that particular environment. An example is the peppered moth population.

The light-colored moths were found on the light-coloured bark, but their population started to decline after the pollution. In the polluted environment, they were easily chosen by predators. So only dark moths survived because they blended in with the polluted environment.

Following the end of the pollution, light colored moth increased again. Predators had a difficult time identifying the light moth because it blended in with the unpolluted environment. Hence, their population increases in unpolluted areas.

Hence, Dr. Kettlewall predicted that a clean forest would have a light-colored moth and a polluted forest would have a dark-colored moth.

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Related Questions

PLS HELP FAST!!!! You have a natural-gas (methane, CH4) stove. When you ignite a natural-gas stove, the methane reacts with oxygen (O2) to produce carbon dioxide and water vapor. Write a balanced equation for this reaction, and be sure to show your work. (6 points)

Answers

Answer:

Methane (CH4) ( C H 4 ) burns in oxygen to produce carbon dioxide and water vapor. The balanced equation is: CH4+2O2→CO2+2H2O C H 4 + 2 O 2 → C O 2 + 2 H 2 O .

Explanation:

The balanced equation for the reaction of methane with oxygen is CH₄ + 2O₂→CO₂ + 2H₂O.

What is methane?

Methane is a gas and a chemical compound with formula CH₄. It is a colorless and odorless gas and very flammable. It is made up of carbon and hydrogen. Methane comes under greenhouse gas.

As it is highly reactive, it reacts with the gases present in the environment.  Here, methane is reacting with oxygen. When one molecule of methane reacts with two molecules of oxygen, it produces carbon dioxide and two molecules of water.

The reaction happens in the presence of heat and high temperature. The balanced reaction is written when the same number of moles are present on both sides of the reaction.

CH₄ + 2O₂ → CO₂ + 2H₂O.

Thus, the balanced equation for the reaction CH₄ + 2O₂→CO₂ + 2H₂O CH₄ + 2O₂ → CO₂ + 2H₂O.

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What Best describes a difference between Prokaryotic cells and eukaryotic cells?

Answers

Answer:

Eukaryotic cells contain organelles that are enclosed in membranes. ... Prokaryotic cells contain a nucleus that is enclosed in a membrane

1. A Prokaryotic cell is surrounded by a single membrane layer but In the case of Eukaryotic, there are two surroundings 1. Plasma membrane 2. Nuclear membrane.

2. In the case of prokaryotic cells, the cell wall is made up of Carbohydrates, lipids, protein and certain amino acids whereas The eukaryotic cell wall is made up of chitin and cellulose.

3. Respiratory enzymes are present on the cell membrane in prokaryotic cells whereas Respiratory enzymes are absent on the cell membrane in Eukaryotic cells

4. Thylakoids present in the cytoplasm in prokaryotic cells whereas Thylakoids occur within the chloroplast in eukaryotic cells

5. SAP Vacuoles are present in prokaryotic cells but SAP vacuoles are commonly present in Eukaryotic cells

6. 70s ribosome are present free in the cytoplasm or attached to mRNA in prokaryotic cells whereas 80s ribosomes are present either free or bound to the endoplasmic reticulum and nuclear Envelope for mRNA

7. Endocytosis and exocytosis do not occur in prokaryotic cells but Endocytosis and exocytosis takes place in many protists and in animals

8. The nucleus is absent in prokaryotic cells. nuclear material lies in the cytoplasm and is called a nucleoid, contains a single chromosome whereas Well developed nucleus found in Eukaryotic cells which surrounds why nuclear membrane nucleus contains two or more chromosomes

9. Fertilization, gamete formation and meiosis do not occur in prokaryotic cells whereas Fertilization, gamete formation and meiosis are well developed in Eukaryotic cells.

10. Prokaryotic cells are haploid whereas Eukaryotic cells are of both types, diploid and haploid

11. Nuclear envelope or nuclear membrane is absent in prokaryotic cells Well developed nuclear membrane or nuclear envelope surrounds the nuclear material

12. The nucleolus is absent in prokaryotic cells whereas One or more nucleolus is present within the nucleus

13. Circular DNA is present without associated proteins Nuclear DNA is associated with proteins in prokaryotic cells but It is linear while extranuclear DNA is present without proteins in Eukaryotic cells

14. If present Flagella are simple, consist of a single fibril. Flagella are formed of a protein called flagellin. but Flagella are complex in structure, 9+2 pattern of microtubules formed of the protein called tubulin in Eukaryotic cells if present.

15. Plasmids and pili are present in many prokaryotic cells whereas Plasmids and pili are absent in eukaryotic cells.

16. Most prokaryotes are reproduced by means of asexual reproduction Most but Eukaryotes are reproduced by means of asexual reproduction.

This is not my answer but I hope it helps

Which statement gives an advantage of multicellular organisms?


Cells are able to provide support.


Their size allows them to maintain structure easily.


They need small amounts of energy.


They can reproduce quickly.

Answers

Answer:

Their size allows them to maintain structure easily.

Explanation:

Multicellular organisms thus have the competitive advantages of an increase in size without its limitations. They can have longer lifespans as they can continue living when individual cells die.

Answer:

Their size allows them to maintain structure easily.

Explanation:

Engineers tasked with building a car bumper need high-quality plastic that is readily available. They found the material polycarbonate, which is long-lasting and not too costly. Which is one technological design criterion they have already met? be available be attractive be durable be safe

Answers

Answer:

be durable

Explanation:

From the scenario described the Engineers have met one of the main criteria which is for it to be durable. A design needs to be made with a material that is available, durable, and cheap in order for it to be as efficient as possible while also selling and being profitable. By finding the material polycarbonate they have made sure that the design will be durable as well as cost-efficient since the material is "not too costly". Now if they are able to acquire the material in large quantities then they would have met the availability criteria as well.

Answer:

The answer is C

PLZ ANSWER THIS IS MY SECOND TIME POSTING AND IM WASTING MY POINTS SO PLZ HELP! HAVE A GREAT DAY! REWARDS WHEN SOMEONE ANSWERS CORRECTLY :D


Explain the importance of the location of female cones found in cone-bearing trees?

The female cones are heavier and bigger than male cones therefore; it needs to be in the bottom.

More animals eat the male cones therefore; it needs to be located at the top of the tree.

The female cones' location is important because male cones drop their pollen from the top of the tree.

More animals are attracted to female cones therefore; it is easier to reach them at the bottom.

Answers

Answer:

The correct answer is B.

Explanation:

Sorry, I got a little sidetracked. lol

Have a great day!

Answer:

The female cones' location is important because male cones drop their pollen from the top of the tree.

Explanation:

Their are both male and female cones. The male cones at the top contain pollen, and it falls to the bottom. The female cones at the bottom catch the pollen with their scales and uses it for fertilizing the soon-to-be seed.

:D

What happens when energy is released from ATP?

1, ATP adds a phosphate

2, ATP completely breaks apart

3, ATP loses all three of its phosphates

4, ATP loses the 3rd phosphate

Answers

4. Atp loses the 3rd phosphate. Hope this helps!

A consequence of "yo-yo" dieting is that

A. the body will actually store more fat around the waist.
B. a person will develop allergies to certain foods.
cholesterol levels will increase.
D. the chances of developing diabetes will increase.

Answers

Answer:

It's ( A )

The body will actually store more fat around the waist.

Explain how the structure of saturated fats poses a danger to your health.

Answers

Answer:

Saturated fats are long chains of rigid fats.

Explanation:

Saturated fats will raise the cholesterol levels of an individual. Their structure results in deposits of fatty acids within arteries and vastly increases the risk of heart-related disease.

Hope this helps

Saturated fats are long chains of rigid fats. Saturated fats will raise the cholesterol levels of an individual. Their structure results in deposits of fatty acids within arteries and vastly increases the risk of heart-related disease.

what are the characteristics that caused scientists to reclassify Pluto as a dwarf Planet?

Answers

Answer:

Now you know what this is!

Explanation:

The name of the process that takes place when sugars are broken down in the absence
of oxygen is

Answers

Carbohydrate metabolism

Answer: fermentation

Explanation:

If oxygen is absent during the second stage of cellular respiration, fermentation will occur

hope this helps :)

A researcher finds that males in two populations of bowerbirds make different types of structures to attract female birds. The males of population 1 build hut-shaped structures and decorate them with colorful objects. The males of population 2 loosely interweave sticks around a central pole and decorate it with dull-colored objects. Female bowerbirds prefer structures made by males of their own population.

Answers

Answer:

.....

Explanation:

....

To access the Hyperlink icon, you will need to navigate to the _____ tab.

Answers

Answer:

Insert tab

Explanation:

Answer:

The insert Tab

Explanation:

What is a supercluster?​

Answers

Answer:

a cluster is a group or some galaxies, but superclusters are groups of clusters.

Explanation:

All changes saved
1. If a cell's organelle worked in an actual human factory and had the role of the electric generator,
which organelle would it be?
O mitochondrion
O lysosome
ribosome
Golgi apparatus

Answers

Answer:

mitochondrion

Explanation:

Which of the following best describes how the chemical energy travels up the food pyramid?

Answers

Answer:

Hope it help you

Stayhomestaysafe

Plz mark my answer brainliest✍️✍️

Explanation:

Chemical energy is used by each of the. organisms in the food pyramid, resulting in less. ... organisms in the food pyramid, resulting in more. energy as it moves up the pyramid.

REAL NAME - SHRESTH DUBEY


How do active and passive transport help a cell respond to changes in the environment?

Answers

- both transport things across the cell membrane
- help the membrane maintain homeostasis

Active and passive transport help a cell in responding to the changes in the outside environment as both of these processes help in transporting substance into and out of the cell and maintaining the homeostasis in cell.

What is Cellular transport?

Cellular transport is the process of transportation of substances into and out of the cell. Cellular transport includes different processes such as active and passive transport. The active transport requires energy for transporting substances against the concentration gradient and the passive transport does not require energy as the substances move in the direction from high concentration to low concentration of solutes.

The transport of substances which are required by the cell and excretion is possible through active and passive transport. these processes helps in maintaining homeostasis in the cell.

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18. What structure of the tibia forms the medial portion of the ankle?

Answers

Answer: Medial Malleolus formed by the end of the tibia.

Explanation: Took human anatomy.

Hope this helps!

Both natural processes and human activity are causing some of Earth's permanent bodies of ice to melt. If enough of this ice melts, it will add warm freshwater to the northern Atlantic Ocean, where deep water currents start. What effect is this likely to have

Answers

Answer:

EFFECTS - : Melting glaciers and icebergs release fresh water and reduce the salinity of the surrounding sea. The seawater also becomes less dense, changing patterns of ocean currents.

Explanation -

MELTING OF ICE AND ADDING WARM FRESH WATER TO NORTH ATLANTIC OCEAN -:  As part of the thermohaline circulation (also called the Global Ocean Conveyor), seawater flows through the Atlantic, the normal pattern by which seawater passes to the oceans of the world. Due to variations in water density caused by differences in temperature and salinity, the water in the Global Ocean Conveyor circulates. Colder water is denser than colder water, while salter water is denser than fresh water or less salty water.

Water heated at the Equator flows north to cold high latitudes at the surface of the ocean, where it becomes colder. When it cools, the deep ocean becomes denser and sinks. To take its place, more warm surface water flows in, cools, sinks, and the pattern continues. But this trend may be modified by melting Arctic sea ice.

The influx of freshwater from the melting ice makes seawater less salty and thus less thick at high latitudes as the Planet begins to warm and Arctic sea ice melts. In reality, data shows that over the past few decades, the North Atlantic has already become fresher.

Answer:

Salinity changes in water

Explanation:

Are all gamma rays shorter than X-rays? Explain your answer.

Answers

Answer:

traviol light. Visible. Gama. Ray light. Microwave. Radio, X-ray photons have longer shorter wavelengths than gamma ray photons. Of all the types of light the Sun gives off, it emits the greatest amount of light

Explanation:

Answer:

yes

Explanation:

The wavelength of a gamma ray is shorter than the wavelength of an x-ray

Gametes produced by an organism contain a combination of genes from that organism. In every gamete, this combination is

A. the same because it is created from the same DNA

B. the same because chromosomes are copied prior lo melosis

C. different due to DNA replication prior to mitosis

D. different due to independent assortment during meiosis​

Answers

Answer:

D). different due to independent assortment during meiosis​

Explanation:

Gametes that an organism produces accommodates a blend of genes of that organism and in each gamete, this blend or combination is 'distinct and that is due to independent assortment during meiosis.' It implies that the chromosomes pass randomly for isolation of poles during the division of cells at the time of the process of meiosis and this independent segregation causes each gamete to contain a unique combination of genetic code. Thus, option D is the correct answer.

Answer:d.

Explanation:

Give an example of an adaptive radiation. Provide evidence to support the claim that the radiation originated with one or a few species, that it was rapid and the descendant groups occupy a wide array of ecological niches. Suggest a hypothesis to explain why the radiation occurred.

Answers

Answer:

An example of an adaptive radiation with evidence to support the claim that the radiation originated with one or a few species is discussed below in details.

Explanation:

The method of evolution of various classes in a given geographical area originating from a spot and spreading to other regions or habitat is described as adaptive radiation. For example, modifications in nozzles of finches on Galapagos island.

Adaptive radiation indicates the adaptation of an organism that allows it to favorably spread, or radiate, into other circumstances. Adaptive radiation commences to speciation and is only used to explain living organisms.

Scientists have a theory about the relationship between climate and biodiversity. Which best describes this theory?

Warmer climates promote higher biodiversity, allowing plants to grow year-round. This supports more organisms that rely on plants.
Colder climates promote higher biodiversity, reducing the competition among organisms for food. This supports stronger organisms that live longer.
Warmer climates promote higher biodiversity because they tend to receive more rainfall. This provides a source of water for more organisms.
Colder climates promote higher biodiversity because they are usually larger in size. This provides space for more organisms.

Answers

Answer:

c

Explanation:

"warmer climates promote higher biodiversity because they tend to receive more rainfall. This provides a source of water for more organisms."

Answer:

The correct answer is A

In 2003 a disease called SARS was a major concern for health officials. SARS is a very contagious respiratory disease. People were infected by SARS in several countries. Fortunately, health officials worked quickly to get the disease under control before it spread worldwide. Which statement best describes SARS? SARS was an epidemic, but not a pandemic. SARS was a pandemic, but not an epidemic. SARS was both a pandemic and an epidemic. SARS was neither a pandemic nor an epidemic.

Answers

Answer:

The correct answer is - SARS was both a pandemic and an epidemic

Explanation:

SARS or Severe acute respiratory syndrome is a viral infection that is first reported inChina in 2003 and caused by a coronavirus. It was moving swiftly continent by continent as an epidemic that was limited to Asia but soon it infected the countries in different continents like North America, South America, Asia, and European countries to become a global epidemic or pandemic.

Thus, the correct answer is - SARS was both a pandemic and an epidemic

A scientist makes the argument that she has found DNA evidence that shows that evolution does not exist. What would her evidence have to show for her to be correct?

A-Strong genetic similarities in closely related organisms and weak genetic similarities in distantly related organisms.

B-Weak genetic similarities in closely related organisms and strong genetic similarities in distantly related organisms.

C-Strong physical similarities among closely related organisms and also among distantly related organisms.

D-Weak physical similarities among closely related organisms and also among distantly related organisms.

Answers

Answer:

B. Weak genetic similarities in closely related organisms and strong genetic similarities in distantly related organisms

Explanation:

just took the quiz

Weak genetic similarities in closely related organisms and strong genetic similarities in distantly related organisms will be an evidence against existence of evolution.

What are the evidence for evolution?

The evidence for evolution of species include similarity in the DNA of closely related species as well as similar structural and anatomical features.

Therefore, an evidence to prove that evolution does not exist will be weak genetic similarities in closely related organisms and strong genetic similarities in distantly related organisms.

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Where does a secondary consumer get its food?

Answers

Answer:

Secondary consumers get their food from from primary consumers(animals that feed on plants e.g goat) only. Eg of secondary consumers are tigers,lions etc.


Which of the following statements best describes the process of photosynthesis?

Answers

Answer:

Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

Explanation:

May i have Brainiest

Do large predators have a positive or negative effect on
herbivores?

Answers

They have a negative effect because the herbivores make up almost all of the  natural predator´s diet.

What is one way that creativity made up for limited technology for early biologists?
Scientists created unique experiments for exploring living organisms without killing them.
Scientists personally designed the custom equipment they needed for their experiments.
Scientists were able to use their imaginations rather than experiments to answer questions.
Scientists developed advanced mathematics to compensate for limited technology.

Answers

Answer:

A

Explanation:

Edge2020

is there an edge to the universe?

Answers

Answer:

And although our observable universe has an edge, the universe as a whole is infinite and has no edge. ... Many galaxies are so far away from the earth that the expansion of the universe causes them to recede from the earth at a speed faster than light.

Explanation:

Hope This Helps Friend!

Answer: The universe as a whole is infinite and has no edge. Many galaxies are so far away from the earth that the expansion of the universe causes them to recede from the earth at a speed faster than light.

Claim Evidence Reasoning. Evaluate the following claim: Meiosis is different than Mitosis.

Answers

Answer/Explanation:

Yes, although they have similarities, meiosis and mitosis are different.

Similarities

Meiosis and mitosis are both types of cell division that results in the production of daughter cells.

They go through similar processes of prophase, metaphase, anaphase, and telophase.

Differences

However, mitosis produces two genetically identical diploid daughter cells from a diploid parent cell.

Meiosis produces four genetically different haploid cells from a diploid parent cell.

There are two rounds of cell division in meiosis, and only one round in mitosis.

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