Answer:
organisms that have more favorable traits tend to leave more offspring ... improved fitness of certain individuals in the population that allows for survival and reproduction. ... Based on H-W conditions, five major causes of evolution: ... factors that prevent organisms of two species from producing vigorous, fertile offspring
Explanation:
Answer:
I would go with B:
The body must maintain homeostasis so that the internal environment stays the same if the outside
Answer:
from 60 to 100 beats per minute
