Oxygen, liquid water, and life is on planet earth
Answer:
the first option is correct
Explanation:
in a food pyramid the base is always producers.
Homologous chromosomes, is a pair of chromosome connected by a centromere. In sexual reproduction, the chromosome of the mother and the chromosome of the father pairs together.
We eat and drink to obtain the energy and matter we use to survive
<span>This result is produced by the selective permeability of the plasma membrane when the presence of negatively charged ions does not diffuse into the cell and the action of several sodium-potassium pump units causes an unequal distribution of charges through the membrane.</span>
