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zvonat [6]
3 years ago
13

This is the amount of time it takes for half of a radioactive isotope to decay

Biology
1 answer:
andrey2020 [161]3 years ago
5 0

A radioactive isotope decays at a constant rate proportional to the number of radioactive atoms remaining. A simple way of describing the speed of decay is to see the time it takes for half of the atoms of a radioactive parent to decay and form the daughter element(s). This is called the half life.

Hope this helps

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Choose all the answers that apply. Erosion is caused by _____. wind water ice gravity
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Water erosion is usually what people think of, but ice, wind and gravity can also cause erosion.

Water erosion is usually along rivers. As the water moves quickly by it rubs on the rock and dirt, causing rivers to slowly get wider.

Ice erosion is caused by glaciers. Sometimes it's a glacier rubbing against land, and there's a lake that was made by a glacier making it's way onto land and then melting.

Wind erosion is a big problem in fields and large open plains with loose dirt. The wind just blows all the dirt away.

Gravity can cause erosion and cliffs. Sometimes along a mountain or cliff the rock won't be able to hold itself up anymore, and gravity will pull it down.

Your answer would be all of them. Wind, water, ice, and gravity.



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In addition to gravity, muscular ____________ waves, originating in the renal pelvis, squeeze urine down the ureters and squirt
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b) and c)

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