What worm has a natural selected against?
A. a nocturnal worm
B. a diurnal worm

Look at the punnett square for an x-linked recessive disease. is it possible for a female offspring to have the disease?

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

Approximately percent of the energy created by cell metabolism is used by the body to carry on its normal functions, such as respiration, digestion, reproduction, muscular movement, circulation, and cellular regrowth.