Answer:
They are veins and arteries. The primary function of arteries is to transport highly oxygenated, nutrient-rich blood from our hearts and distribute it to the rest of our body. Veins, on the other hand, are used to pump much-needed blood back to the heart.
Answer:
Radiation
Explanation:
Radiation is the transfer of heat by means of electromagnetic waves.
Answer:
Characteristics
Explanation:
not genetic diversity that would invlove other organisms, not dna because DNA is not being replictaed, and not A because come on