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raketka [301]
3 years ago
13

When in U.S, history did pollution start to become an issue? Explain why pollution was not an issue prior to this time period.

Biology
1 answer:
sasho [114]3 years ago
8 0

Answer:

pollution began to be a problem in 1800's.

Explanation:

more people meant more rubbish. industry also added to this

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Explain why mutations that happen during mitosis are not passed on to children
kondor19780726 [428]

Answer:

It is quiet simple the only way the offspring of two organism could be effected by any sort of mutation is if the mutation accrued during meiosis.

6 0
3 years ago
You've discovered a new plant species in which
valina [46]

Answer:

All the crossing will be like this after realizing it:

Explanation:

Gl x Gl

GG, Gl, Gl, ll

gl x gl

gg, Lg, Lg, LL

On the first crossing we'll have 50% Gl and both other genotypes will be 25%

On the second crossing we'll have 50% Lg and both other genotypes will be 25%.

6 0
3 years ago
Why is a house warmer on the top floor and colder in the basement
topjm [15]
Because warm air rises up so it's warmer on the top floor. 
7 0
3 years ago
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What lymphatic tissue in the submucosa of the small intestine prevents bacteria from entering the blood?
kolezko [41]

The answer to this question is the Pyers patches. The Pyers patches are lymphatic tissues found through the small intestines that have an important role in the immune system. Pyers patches are also known as the aggregated lymphoid nodules that monitors and prevents growth of bacteria in the intestine that is harmful in the intestines.

5 0
3 years ago
What is a warm air mass that rises over a cold air mass?​
cluponka [151]

Answer: warm front

Explanation: When a warm air mass meets a cold air mass, the warm air rises since it is lighter. At high altitude it cools, and the water vapor it contains condenses. This type of front is called a warm front. It generates nimbostratus clouds, which can result in moderate rain.

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