When we talk about evolution we come across the process of natural selection. Genetic variation is always required for the natural selection. A change or variation in the genes may help the individuals in a population to better adapt to the environment. Such changes may be brought by mutations or random mating in the population. Such variations help in the survival of the population by allowing them to adapt to changing environmental conditions.
Answer:
Body
— Right atrium Right ventricle - Lungs – Left atrium Left ventricle -
Explanation:
Answer: i would think that the earth would naturally ware it down over time if there are no decomposers
Explanation:
Answer:
Replication, transcription, translation (it’s the central dogma of biology)
The two semilunar valves, the pulmonary and aortic valves, are closed, preventing backflow of blood into the right and left ventricles from the pulmonary trunk on the right and the aorta on the left.
