Marijuana growers main reason in diverting water from creeks and wild rivers is due to drought. Like any farmer, marijuana growers needs water for the cultivation of this plants. This booming of industry marijuana cultivation has to lead to the greater demand for water which could not be sustained because of drought.
A cave, from the water slowly cracking and chipping away at the rock it seeps down into, creating freshwater, but also, slowly creating a cave.
I'm thinking it might be fossil evidence. Hope it helps!
the actual CORRECT answer is change.
So,
The environment needs to [change] in order for natural selection to occur.
Don't worry i took the test trust me!