Answer:
it is because of the bacteria and different things that go into waters such as ponds, rivers, lakes, seas, oceans, streams, and other body of waters and I should also add the chemicals that go into them as well
Explanation:
Answer:
Plants take carbon dioxide out of the atmosphere, but they also have other effects, such as changing the amount of evaporation from the land surface. ... The plants absorb carbon dioxide for photosynthesis through the same pores (called stomata). But when carbon dioxide levels are high, the leaf pores shrink.
Explanation:

25%
Explanation:
In a half life of a radioactive isotope is 1 day,it means it loses its half mass each day
We a formula for N half life

where n is the number of days
Here the isotope is kept for 2 days
so it's left over mass will be

It's left over mass 1/4th of the original mass
Now, we need to find it's percentage by multiplying with 100

<u>So</u><u> </u><u>2</u><u>5</u><u>%</u><u> </u><u>mass</u><u> </u><u>will</u><u> </u><u>be</u><u> </u><u>left</u><u> </u><u>after</u><u> </u><u>2</u><u> </u><u>day</u><u> </u><u>of</u><u> </u><u>half</u><u> </u><u>life</u><u> </u><u>radioactive</u><u> </u><u>isotope</u><u>.</u><u> </u>
Displacement, usually the method that is used to measure the volume of an irregularly shaped object.
<span>The term used by meteorologists for predicting the we ather is </span>forecasting