Fusion is a type of

chemical reaction
physical reaction
nuclear reaction

At the complete end of cellular respiration, how many molecules of atp are produced?               a.  15    b.  26    c.  38    d.  34 

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm