Which human activity does not affect the earth system?

Answers

Answer 1

Answer:

Answer:

Use of solar energy or wind energy.

Explanation:

The human activity that does not affect the earth system can be conversion of solar energy, wind energy etc. Since solar energy is produced by sun, it causes no harm to the earth system. Same as wind energy which is collected from the blowing winds by the help of windmills.

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In the case of the peppered moths in England, when Kettlewell set up cameras to document that more white or black moths were eaten by birds on clean or sooty trees, he was verifying which factor involved in evolution by natural selection?

Answers

OPTIONS:

a. The organisms vary in trait

b. The variation is inherited

c. More young are born than can survive

d. Some individuals are better adapted to the environment

Answer:

d. Some individuals are better adapted to the environment

Explanation:

Kettlewell’s biological experiment, which was conducted in England, was to study the evolutionary changes taking place in trees in relation to the appearance of dark-colored moth.

It was observed that white moths were more common before the industrial revolution. After the industrial revolution, which changed the background of the environment of the moths due to pollution, the moths became easily seen and obvious to predatory birds.

It was discovered that peppered moths were selectively preyed on by birds depending on their body color, which serves as the most important factor that determines if moths can survive predation by blending with the background of their environment. This led to the evolving of moths of their color to blend with the background of their environment, which makes them hide from the birds that prey on them.

Kettlewell was trying to verify the factor in evolution by natural selection, which says, “some individuals are better adapted to the environment”.

Anything that has volume or mass isa. water.
b. light.
c. matter.
d. heavy.

Answers

C, matter because matter makes up anything that has volume and is the basis of all materials.

The answer is matter.
All matter is considered to take up space and have a mass.

Archaebacteria and eubacteria are _____. A) prokaryotes B) eukaryotes

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These both are prokaryotes, they do not have many membrane bound organelles. Their DNA is found in the nucleoid (no membrane), not the nucleus.

While both archaebacteria and eubacteria areprokaryotic, they are evolutionarily different. All prokaryotic cells are unicellular, have a cell wall and lack both a nucleus and membrane-bound organelles.

What is the source of oxygen produced during photosynthesis?

Answers

Answer:

the air

Explanation:

Answer:

Water

(correct me if I'm wrong)

When cleaning up water pollution in a large lake or river, it is important to clean up the entire??

Answers

When cleaning up water pollution in a large lake or river, it is important to clean up the entire watershed. It is a basin-like landform defined by highpoints and ridgelines that descend into lower elevations and stream valleys. This is because pollution can be transfered to other areas of the lake or the river when this part is not cleaned well.

Plant cells have _____ and _____, which are not present in animal cells.a. mitochondria, chloroplasts
b. cell membranes, cell walls
c. chloroplasts, nucleus
d. chloroplasts, cell walls

Answers

D. chloroplasts, and cell walls.

Chloroplasts are only uses by plants for photosynthesis.
Cell walls are not present In animal cells.

Other Questions

Oxygen is released as a waste product by plants during the process of

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Which United States president began the tradition of the State of the Union address? a. James Madisonb. Woodrow Wilsonc. Thomas Jeffersond. George Washington

An onion or a daffodil reproduces by means of an underground structure called a _____. bulb tuber rhizome