Only if you know answer 2) In male human the number of homologous chromosome pairs is

a-1 Chromosome
b- 22 Chromosomes
c- 23 Chromosomes
d- 46 Chromosomes

Which describes how weathering and erosion are different? weathering is caused by water. erosion is caused by wind and ice. erosion transports sediments. weathering is a natural process.

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 what for do plants utilize nitrogen? why do they need nitrogen?