What's a geographic variation in fossil record?

What was Rudolph Virchow's contribution to the cell theory?

Instructions:Select the correct answer. Why does a solid change to liquid when heat is added? A-The spacing between particles decreases. B-Particles lose energy. C-The spacing between particles increases. D-The temperature decreases.

What distinguishes a hypothesis from a theory? A. A theory is a scientific explanation. B. A theory is testable. C. A theory explains a natural phenomenon. D. A theory is backed up by repeated observations and tests.

The space between the dendrites of one nerve cell and the axon of the?

Different types of cells within an organism A are all the same B do not have any function C serve a different function D can survive on their own

You eat a large meal and then hike up a hill. What kind of energy transformation is your body performing? A. Chemical energy to kinetic energy and nuclear energy B. Potential energy to sound energy and nuclear energy C.

Which nervous systems balance each other to provide homeostasis?

The modern classification system is based on A - putting organisms into categories based on where they live. B - putting organisms into categories based on how they reproduce. C - putting organisms into categories based on similar characteristics.

Classify the mutations as somatic or inherited A. Mutations in the KRAS gene in lung cells promote continuous cell growth B. Mutations of the BRAC1 gene in egg cells lead to breast cancer C.

The female determines the sex of mammals. True False