An organism's fitness can be best measured by observing its NUMBER OF OFFSPRING. Healthy and fit organisms tend to give birth to large number of offspring in a sequential manner while less fit animals do not produce much young ones and the birth of their offspring is often far in-between .
There are two types of aging, primary aging and secondary aging.
Anything that cannot be controlled is called primary aging, things that can be controlled such as physical factors, are called secondary aging.
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BioTeacher101
Mitochondria, cell membrane, and vacules
Answer:
Answer: I don't know .....
