A) physical factors are always tolerated.
B) there are limits to the physical factors organisms can tolerate.
C) the higher a species' tolerance the more successful it is.
D) physical resources are more important than physical factors.
E) none of the above

A) energy is allocated but other physical resources are not.
B) fitness is highest when all energy is allocated to reproduction.
C) fitness is highest when all energy is allocated to survival.
D) some adaptations preclude others.
E) none of the above

A) aestivation
B) hibernation
C) torpor
D) increasing the tolerance limit
E) none of the above