Rapidly cooled rock contains small crystals. true or false

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.

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur