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motikmotik
3 years ago
15

How is the production of mercury from burning coal an environmental hazard?

History
2 answers:
alisha [4.7K]3 years ago
7 0

Answer:

b. Mercury in water systems is transformed through biological processes into a substance that is toxic to animals.

Explanation:

Mercury is found in many different forms in nature, and we use if for a variety of different products. However, while mercury is useful in many different ways, it can also become an environmental hazard when it is released into the atmosphere. This can happen naturally, but it can also happen as a consequence of the burning of coal, oil and wood. This airborne mercury can then fall as rain, dust or simply due to gravity, contaminating water systems and becoming toxic to animals.

nirvana33 [79]3 years ago
7 0

Answer:

the answer is B on edge

Explanation:

I JUST DID THE TEST ;)))))))

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Vika [28.1K]

Green revolution refers to the drastic increase in food production during 1960s in the developing countries.

Two intended outcomes: 1. HYV seeds enhance the productivity level. 2. Use of modern machinaries promote huge yield per unit of land.

Two unintended outcomes: 1. Loss of soil fertility. 2. Increase of salinity in under ground water.

Explanation:

In 1960s green revolution brought a drastic change in India's agricultural pattern. Yield per unit of land increase rapidly. It introduced the use of modern machineries, pesticide & weedicides in the crop land, HYV (High yielding variety) seeds etc.

Besides due to green revolution pollution level rise up, salinity level in the ground water increases and even the soil fertility level decreases. Huge and frequent use of pesticides and insecticides promotes soil erosion and crop rotation, multiple cropping system reduces soil fertility level.

7 0
3 years ago
F(n)=5xf(n-1)<br><br>f(0)=5<br><br>f(3)= <br><br><br><br>(x means multiple)
tensa zangetsu [6.8K]

Answer:

625

Explanation:

So this says the following:

A term is equal to 5 times the previous term.

We are given the 0th- term is 5.

The first term is 5(5)=25.

The second term would be 5(25)=125.

The third term would be 5(125)=625.

So f(3)=625.

If you didn't like that explanation, you can find f(3), by first finding f(1) then f(2) using the equation given as is without making the interpretation I did above.

f(n)=5 \cdot f(n-1) ; plug in 1 for n:

f(1)=5 \cdot f(1-1)

f(1)=5 \cdot f(0)

f(1)=5 \cdot 5

f(1)=25

f(n)=5 \cdot f(n-1) ; plug in 2 for n:

f(2)=5 \cdot f(2-1)

f(2)=5 \cdot f(1)

f(2)=5 \cdot 25

f(2)=125

f(n)=5 \cdot f(n-1) ; plug in 3 for n:

f(3)=5 \cdot f(3-1)

f(3)=5 \cdot f(2)

f(3)=5 \cdot 125

f(3)=625

3 0
3 years ago
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George Harrison played an Indian instrument known as a tamboura on the final take when the Beatles recorded Lucy in the Sky with Diamonds. The song was a mix of different takes mixed together.

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3 years ago
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Lelu [443]
The 4th one. :) hope this helps you!
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3 years ago
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The completion of the first transcontinental railroad helped aid settlement in which area?
Yakvenalex [24]

Answer:

The west part of America

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