Answer:
400
Explanation:
Because if you pull one black marble out of four and there are 100 black marbles then there is 300 others, so in total it would be 400 marbles.
thanks if i'm given brainliest!!!
Answer:
D
Explanation:
It doesnt pollute things by being burned, like other energies do like coal
The Quaternary level of consumer has the smallest supply of energy. ;)