12. humans have had a tremendous impact on the environment. what has caused an increase in the amount of acid rain?

a. use of chlorofluorocarbons
b. use of pesticides
c. coal burning power plants
d. nuclear power plants
e. use of industrial acids in machinery work

the dna of humans and mice is almost 92% similar. this similarity indicates that . mice have a tail, while humans have a tailbone. the tailbone is a structure in humans.yes it's true.

silt loam

hope this

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u

maybe because its impossible for balloons to lift a whole entire house.