Answer:
A radioisotope is a radioactive isotope.
Answer:
Acid rain: Rainfall made so acidic by atmospheric pollution that it causes environmental harm, chiefly to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels.
Alternative fuels is an excellent way to prevent acid rain and to stop using nonrenewable fuels and switch over to renewable sources of energy, such as solar, wind and water energy.
<span>Earthworms are annelids. </span>
I'd say A because yes they filter water but that has nothing to do with flooding you'd just have filtered flood water.
