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.

To learn more about natural selection, refer to the following link:

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Related Questions

which two structures are not found in both animal and plant cells

Answers

Cell wall and chloroplast are two examples of structures which are found in plant cells but not in animal cells.

10
01:57:37
In the study of cancer, researchers have used different types of cells, different environmental conditions, and different
experimental designs. But, all researchers have arrived at the same conclusion. What does this say about the
conclusion?

Answers

Answer: In study of cancer, researchers have used different types of cells, different environmental conditions, and different experimental designs. But, all researchers have arrived at the same conclusion that the study is well supported to cancer studies.

Explanation: This is because each cell behaves differently in different environmental conditions and each type of cell has its peculiar behaviour in different conditions.

So by this pattern varied studies can be done.

Answer:

A

Explanation:

I will mark BRAINLIEST
Which of the following does not occur in an aquatic ecosystem as a result of nutrient loading?
a. acidification of the water
b. algae growth as a result of eutrophication
c. degraded quality of water for human and livestock consumption
d. improved water habitats for human recreation

Answers

Answer:

D

Explanation:

Egdenuity 2022

Improved water habitats for the human recreation does not occur in an aquatic ecosystem as a result of nutrient loading. Thus, the correct option is D.

What is Nutrient loading?

Nutrient loading means the total amount of a nutrient such as elements like nitrogen or phosphorus entering the water during a given time period, such as tons of nitrogen per year, or pounds of phosphorus per day. Nutrients may enter into the water from runoff, ground water recharge, point source discharges, or the air particles.

Improved water habitats for the human recreation does not occur in an aquatic ecosystem as a result of nutrient loading.

Therefore, the correct option is D.

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Summarize the process of sexual reproduction and explain how variations of inherited traits can increase or decrease an organism’s chance of survival

Answers

Answer:

Explanation:

A Human cell has 46 chromosomes. (I’ll use humans to keep things simple). In sexual reproduction both humans have 23 chromosomes, in their sex cells. (Men have 23 in a sperm and women have 23 in an egg cell). These half cells merge to create 1 unique cell, that has characteristics of both male and female. The cells multiply and then a baby is born with a unique set of genes. These cause variations, and remember these variations can carry from generation to generation. As for how variations can increase a chance for survival, variations allow unique gene sets to be made, so that in case of a disease (in this case I’ll use a disease, but it could also include harsh environmental conditions), these unique gene sets may give an individual natural immunity to the disease. How can a variation decrease an organisms chance for survival? Well, s there are many ways that a unique gene set can make it difficult to survive. For example a genetic disease your family has had a history with. These diseases include, but are not limited to, cancer, diabetes, and schizophrenia.

What type of electron is available to form bonds?

Answers

Answer:

The electrons that are available to form bonds are known as valence electrons.

Explanation:

The electrons that are available to form bonds are known as valence electrons. I hope this answer is helpful.

The type of electron available to form bonds is a valence electron

What type of electron is available to form bonds?

Valence electrons are the electrons in the outermost energy level or shell of an atom. These electrons are involved in the formation of chemical bonds between atoms.

Valence electrons are responsible for determining the chemical properties and reactivity of an element. When atoms come together to form chemical bonds, they do so by sharing, gaining, or losing valence electrons. The interaction of valence electrons between atoms allows for the formation of covalent bonds, ionic bonds, or metallic bonds, depending on the specific circumstances.

Therefore, valence electrons are crucial in the process of bonding between atoms.

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b) Write about pest control?

Answers

Answer:

Pest control is helpful I guess...

Explanation: Pest control uses lots of chemicals and poison stuff to kill those vexing pests but most importantly it kills them its a dangerous job if you don't know what your doing.

Answer:

give the answer in short Press control means when in our home of dirty Cockroaches and small insects then we Press control our house to get out all the dirty insects

Explanation:

Mansa is up to this if this is correct then mark me as a brainliest

need help
6H2O + 6CO2
C6H12O6 + 602

Answers

Answer:

C6H12O6+6O2=6CO2+6H2O

which best explains the mechanism that allows for cell differentiation ?

Answers

Answer:

Cellular differentiation

Explanation:

Which type of energy change causes this leaf to grow? A. Thermal energy is transformed into potential energy. B. Thermal energy is transferred to the leaf. C. Electromagnetic energy is transformed into chemical energy. D. Electromagnetic energy is transferred to the leaf.

Answers

Answer:

C. Electromagnetic energy is transformed into chemical energy

Explanation:

Growth is one of the characteristics of living things. It refers to the increase of an organism. A leaf is part of a plant, which is a photosynthetic organism i.e. an organism capable of producing its own food using energy from sunlight. Light energy is a part of the ELECTROMAGNETIC ENERGY.

This light energy is used to synthesize glucose (food) via photosynthesis. The glucose, which stores chemical energy in its bond is then broken down to yield ATP used for growth. Hence, the transformation of electromagnetic energy to light energy is how a leaf grow.

it is C.  Electromagnetic energy is transformed into chemical energy.

Wetlands are natural parts of watershed systems. Wetlands provide benefits many benefits. Which of these is a way that wetlands directly benefit humans?

- provide nesting grounds for birds

- decrease erosion along shorelines

- reduce flooding in adjacent towns

- increase biodiversity near the ocean

Answers

wetlands help us by reducing flooding in adjacent towns

Answer:

the answer is c because it soaks up the water so it cant flood the towns

Explanation:

The fraction whose denominator is 8 more than the numarator​

Answers

Answer:

Explanation:

1/9

Answer:

[tex]\frac{8}{16}[/tex]

Explanation:

What is the smallest unit ?

Answers

Cell

I had the same question on my test!!

Answer: B) cell

the smallest unit of life is a cell

A student wants to investigate the force of gravity. The student has an apple and a marble. What would be the best way for the student to use these materials? Place the apple on the floor. Roll the marble so it hits the apple. Put both objects on a desk. Push them forward at the same time. Hold both objects at the same height above the floor. Drop them at the same time. Place the marble on a desk. Place the apple next to the marble so the objects touch.

Answers

Answer:

Put both objects on a desk

Explanation:

The best way to use the materials to investigate the force of gravity would be to put both objects on a desk. The force of gravity can thus be obtained by measuring the distance between the objects as well as their masses.

According to Newton's law of universal gravitation, the force of gravity (F) between two objects is directly proportional to the product of their masses (m and M) and inversely proportional to the square of the distance (d) separating them.

Mathematically,

     F = G [tex]\frac{mM}{d^2}[/tex] where G is a constant.

Why should we be concerned about the disappearance of phytoplankton in the oceans

Answers

Answer:

The loss of phytoplankton is a huge problem for marine food chains, says Worm, because every creature in the ocean either eats phytoplankton or eats other organisms that depend on it.

Hope this helps!

Hurry plzzzz >_<
How are plant and animal cells similar?

Answers

Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements

Answer:

Plant and animal cells are similar because both are eukaryotic. Every plant and animal cell has a cell membrane and cytoplasm. In addition, nearly all plant and animal cells have a nucleus.

Explanation:

I got it right

Why is energy lost in a food chain? *​

Answers

Answer:

Because as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level

Explanation:

Hope that helps!

not all energy is passed from one level of a food chain to the next. Around 90% of energy is lost from heat during respiration, in materials that the consumer doesn't digest, or through movement. Through the undigested materials where the energy is stored It's transferred to decomposers.

quick is de word...
taking yuh less than a min...

Answers

Answer:

renewable:

-wind

-forest

-water

-wildlife

-sun

non renewable

- coal

-soil

-natural gases

Explanation:

i googled it

hope this helps

brainliest?

Using the law of conservation of mass, what is the mass, in grams, of the product in the given reaction?

Reactant 1 (35 grams)+ Reactant 2 (115 grams) →Product (? grams)

A. 80

B. 140

C. 150

D. 75

Answers

Answer:

The correct option is;

C. 150

Explanation:

By the law of conservation of mass we have that in a closed system, the mass of the items in the system can not be destroyed or created by a physical process or chemical reaction

In the given chemical reaction process we have;

Reactant 1 (35 grams) + Reactant 2 (115 grams) → Product = ((35 + 115) grams)

∴ Reactant 1 (35 grams) + Reactant 2 (115 grams) → Product (150 grams)

The mass of the product = 150 grams.

Help me answer that question and how are you supposed to know which one is the predator and the prey like how can you tell?

Answers

Answer:

predator is blue, prey is red

Explanation:

when the amount of predators increase, the blue line rises, the red line lowers. when there is more predators there is going to be a less amount of prey.

7. What is the water vapor concentration at the tropopause?

Answers

Answer:

99 %

The troposphere contains 99 % of the water vapor in the atmosphere. Water vapor concentrations vary with latitude. They are greatest above the tropics, where they may be as high as 3 %, and decrease toward the polar regions.

Explanation:

hope this helps <3

Which part of the DNA structure provides the genetic code for our traits?
Deoxyribose Sugar
Nitrogen Bases
Double Helix
Phosphate

Answers

Answer:

Phosphate

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Explain the purpose of cellular respiration .where does it take place ?

Answers

Answer:

Cellular respiration, it is an aerobic process in which glucose is combined with oxygen and Adenosine di-phosphate (ADP) to produce carbon dioxide, water, and Adenosine tri-phosphate (ATP).

Cellular respiration takes place in double membraned organelle called mitochondrion.

Which of the following statements correctly describes the relationship between energy and nutrients in an ecosystem?


a. Energy and nutrients flow
b. Energy and nutrients cycle
c. Energy flows and nutrients cycle
d. Energy cycles and nutrients flow

Answers

A Nutrients move through the ecosystem in biogeochemical cycles. A

Which of the following is a result of too many greenhouse gases in the atmosphere?
A: Glaciers melting
B: Sea levels rising
C: Cloud forests drying

Answers

Answer:

glaciers melting

Explanation:

thats what i would say

HELP PLEASE BTW ITS NOT C I JUST PUT ANY ANSWER

Answers

Answer:

The answer would be D because it clearly states that the reactants are separated fron the products.

The correct answer would be D

16. Name one organism that reproduces through binary fission​

Answers

Answer:

Coral!

Explanation:

I learned this is a biology class a while ago!

Answer:

Bacteria

Explanation:

Is toxic chemical pollution a nonpoint source pollution or a point source pollution? I need an actual answer.

Answers

Answer:

Excess fertilizers, herbicides and insecticides from agricultural lands and residential areas. Oil, grease and toxic chemicals from urban runoff and energy production.

Explanation:

Which one of the codons below would stop the translation of mRNA by ribosomal subunits?
UAG, UAA, UGA
AUG, ATG, GTU
CUG, AUG, GUA
ATG, AAG, AAA

Answers

CUG hope this helped!!!!!

Answer:

CUG,AUG,GUA

Explanation:

Help me please hurry???????????

Answers

Answer:

Compared to the use of many gasoline vehicles with only one person per vehicle, this method of transportation conserves more fossil fuels.

Explanation:

A form of transportation —such as the subway or streetcar— has capacity for many passengers and uses electricity as an energy source. This means fewer people using gasoline-vehicles, which leads to savings in fossil fuels, such as gasoline or diesel.

The decrease in the use of fossil fuels in vehicles has been proposed as an alternative to reduce environmental pollution and its consequences. One alternative is to consider mass transport vehicles that use alternative energy, a sustainable form of transport.

    None of the other options are correct, as they involve more or the same use of fossil fuels per person.

Ivan reads a story about a population of mice that become stranded in a dark jungle. Some mice are dark brown, while others are white. According to the process of natural selection, predict which mice would be more successful living in a dark jungle. Explain natural selection and your prediction.

Answers

Answer:

The dark brown mice would be more successful in a dark jungle since the darker color of their fur would make it hard for predators to spot them.

The process of natural selection, predict which mice would be more successful living in a dark jungle is de dark brown.

What is natural selection?

Natural selection is one of the main mechanisms of evolution. In a very simple way, we can say that natural selection is a process in which the fittest organisms are selected, survive in the environment, reproduce and pass their characteristics on to their descendants.

In this case, as it is a very dark forest, an animal with a white coat will attract more attention while an animal with a dark brown color will only be camouflaged in the environment.

See more about natural selection at brainly.com/question/9830102

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