Describe how natural selection would affect a tortoise population on an island with thick vegetation and an island with very little grass.

What shape would a molecule with two bound groups and two lone pairs have?

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.

What must be in balance for temperatures to remain constant?