If a cell's dna were not copied before cell division, the cell could
a) have a dna overload
b) become cancerous
c) fail to exchange materials
d) divide

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis.b. the primary role of microbes on the planet involves causing disease in animals and humans.c. microbes produce vitamins in the intestines.d. microbes play a role in breaking down waste and decomposing dead organisms.

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

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.