Overtime a species can change - due to environmental factors and geographic changes. Sometimes, these changes can lead to new species all together, like with the Gallapagos iguanas. This origin of a new species, based on changes from the orignial species is know as
speciation (descent with modification)
B artificial selection
geographic isolation
D fitness

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.