Answer:
They use them so that they can see what type of organisms live there.
Explanation:
Answer:
A
Explanation:
As it is caused by human intervention and doesn't occur naturally.
I'd say Solar energy is a source we humans could use in the future
Answer:
d. all of these
Explanation:
because of course scientists needs
experiments, observation and as well
as object measurements while inventing
some new objects.