According to the passage, a water treatment plant I. cleans water before it goes to your house
II. cleans the dirty water that leaves your house
III. fills up the reservoir when it does not rain enough

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.

In which situations is the principle of cross-cutting relationship useful in determining relative age?

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.