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Mice21 [21]
4 years ago
6

Select all the potential effects of damming a river.

Physics
2 answers:
Harrizon [31]4 years ago
8 0

Many people are in favor of the dam. Hydroelectric power is not as polluting

as other forms of electrical generation. The country is growing quickly, and

its economy is growing. The country must be able to produce more electricity

to meet everyone's needs. However, those opposed say the dams will force

many out of their homes. It will destroy an important wilderness area, and may

damage ecosystems - especially river or fjord ecosystems in Patagonia, since

silt won't be carried down rivers. Many also say that the project helps the

copper mining industry, and they believe that this project will benefit

businesses, not the people of Chile

Zina [86]4 years ago
3 0
I would say that A, B, & E are the answers
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It is known as silicon dioxide or silica!

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6 0
3 years ago
Read 2 more answers
You have a graduated cylinder that you use to measure volume. The cylinder
ad-work [718]

Answer:

D. 21 ml

Explanation:

Since, the cylinder is marked and graduated in the intervals if 1 ml. Therefore, the values between two consecutive ml, such as between 30 ml and 31 ml can not be determined. Because, we do not have any scale in between the ml. So, the least count of this instrument is 1 ml. This graduated cylinder can give the answers to zero decimal places, accurately. And it can not determine any decimal value due to its graduating or the marking limitation. So, all the options given, contain a decimal value, except for the option D. In option D there is no decimal value, hence it is a correct answer.

D. <u>21 ml</u>

5 0
4 years ago
Read 2 more answers
GRAPH INCLUDED PLEASE HELP
swat32

Answer:

10 days

Explanation:

The half-life of a radioactive sample is the time taken for half of the sample to decay.

In the diagram, the half-life corresponds to the time after which the % of cobalt-57 has halved. We can observe the following:

At t=10 days, the % of Co remaining is approximately 45%

At t=20 days, the % of Co remaining is approximately 22%

This means that the sample of cobalt-57 has halved in 10 days, so the half-life of cobalt-57 is 10 days.

5 0
4 years ago
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