Which resource is renewable?

plastic bottle
pinto beans
precious metals

Which statements correspond to cellular respiration? co2 diffuses passively into the cell. co2 diffuses passively out of the cell. co2 must be pumped out of the cell. o2 diffuses passively when produced inside the cell. o2 diffuses passively when converted to co2. o2 is pumped in and forces co2 out.

Why is excretion necessary to maintain homeostasis?

9. wind power creates pollution. water air soil noise