Answer:
Voluntary muscles are muscles that you control; involuntary muscles are muscles that are controlled by the brain, etc and doesn't need your control in order to contract...
Answer:
The differential equations and the boundary conditions(initial and final)are shown in the attachment
Answer:
"Survival of the fittest" is a phrase that originated from Darwinian evolutionary theory as a way of describing the mechanism of natural selection. The biological concept of fitness is defined as reproductive success.
Explanation: