Scientists discovered that small-footed and large-footed lizards shared a common ancestor. today they are no longer able to interbreed together.

what is this an example of?

a.
speciation

b.
succession

c.
spontaneous generation

d.
natural selection

Which of these has happened to your food by the time it reaches your small intestine? a. all the macromolecules have been broken down completely. b. lipids and starches have been partially broken down. c. starches and proteins have been partially broken down. d. proteins and lipids have been broken down into subunits.

What materials must dams have to produce electricity, and what must occur?

Modern sea star larvae resemble some primitive vertebrate larvae. this similarity may suggest that primitive vertebrates