The statement "energy is conserved" means that A. Energy cannot be destroyed or created.
B. The total amount of energy in the universe remains the same.
C. All of these
D. Energy is not lost, but it can change form.

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Compare and contrast cladistics and phylogeny. what are their advantages and disadvantages? which is the most useful in understanding how an organism developed into its current form? which concept most strongly supports your opinion about the origin of any given organism?