Rocks and Minerals ... Each unstable isotope has its own decay rate known as its half life. ... For example starting with 100% of a parent isotope after one half-life only 50% of the parent isotope would remain, after a second half-life half
The answer to this is precipitation.
Precipitation is rain, snow, sleet or hail that falls to the ground.
So precipitation is the answer.
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Without it, everyone would have to provide their own food and shelter.
Answer:
D. pacific islands
Explanation:
took the usatestprep and got it right
Doldrum is the region of very calm and little or no wind on either side of the equator. Doldrums which is also called convergence zone is an equatorial region of the Atlantic ocean which has sudden storms and light unppredictable winds. In addition doldrum is abelt around the earth near the equator where the sailing ships sometimes get stuck on windless water.
