Under the ocean is wet and in continents its dry
We need to keep the earth clean 1 because we live on it.Do you want to live on a planet with trash every were.Even if the dump digs a hole in the ground it will tack a couple of years to break down. factories mace hundreds of thing think how many hole we will have to dig.
We can stop it by using all of our thing. Don't waste food save it if you don't like it try to give it to the homeless.
hope it helps.
Answer:
B. one fourth of the original substance
Explanation:
a substance's half life is how long it takes for half of the atoms in the substance to chemically decompose. once it's half life has been completed, it will start again with the remaining material. after 6000 years, only half of the material will remain, after 12,000 years a quarter wil remain, after 18,000 years an eighth will remain, etc.