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marissa [1.9K]
3 years ago
14

Ja’ron lives near a river that flows through farmland. He notices that the river has become more polluted over the years. The wa

ter that was once clear is now sometimes cloudy and has an unpleasant odor. What is the most likely cause of the pollution in the river? A. heat B. oil and gasoline C. industrial wastes D. pesticides and fertilizer
Biology
1 answer:
madam [21]3 years ago
8 0

Answer: pesticides and fertilizer

Explanation: He lives in an area of farm land so, big crops are grown and to keep the bugs off the plants, farmers use pesticides. Then what happens is when it rains, the excess runs off into the river and pollutes it.

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Why do people feel fireworks before hearing it?
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People feel fireworks before hearing it because light travels faster than sound.

Explanation:

We always see the colors of the fireworks before hearing their defeaning sounds. This is because light travels faster than sound, so we can see the light before hearing the sound. An example of this is seeing lightning before hearing thunder. When lightning strikes, the air around it moves very quickly, causing vibrations.

<em>Hope this helps!</em>

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4 0
3 years ago
An age pyramid with a broad base that quickly slopes up to a narrow top would be indicative of ________.
kiruha [24]

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A. a developing nation

Explanation:

Age pyramids are the age structure diagrams that represent the number and proportion of people at each age in a population. The base of the age pyramids represents the population in pre-reproductive age which is from 0 to 10 years. The overall shape of an age pyramid indicates if the population is increasing, stationary, or shrinking.

The age structure diagram for a developing nation has a broad base that tapers quickly towards the top. This means that a larger percentage of the population is in the pre-reproductive age group and reproductive age group with a smaller percentage of the population in the post-reproductive age. These countries have a great chance of future population growth.

3 0
4 years ago
Compare the functions of the circulatory, respiratory, and nervous system in gas exchange
kow [346]

Answer:

Functions of the circulatory, respiratory, and nervous system in gas exchange are interconnected with each other in the following manner:

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8 0
3 years ago
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pav-90 [236]

Answer:

Explanation:

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7 0
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The parents type mixes and creates an O or a different blood type.

8 0
2 years ago
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