10. What always happens as an unstable isotope decays?

A. atomic mass increases

C. atomic mass stays the same

B. atomic number decreases

D. radiation is emitted

At a seismic station, s-waves arrive first, followed by p-waves second. True False

What is mitosis? What is the importance of mitosis?

What is "selected" during natural selection? explain your answer. g?

If malaria were eliminated from a certain area, how do you think the frequency of the sickle cell allele in that area would change

Describe how a selectively permeable membrane is involved in osmosis. Include the role that the solute concentration plays in the direction of water movement. Now think about how this process may differ between plant and animal cells.

What is the lowest level of organism organization? A. cell B. nucleus C. tissue D. system

What is the current theory of the origin of life

DNA has the instructions for making a cell's blank

What would be the result if crossing over did not happen during meiosis in humans?

What must be done to breed dogs for a particular trait? a. Mate two dogs that have the desired trait. b. Protect dogs with the trait from natural selection. c. Mate any dogs and see what variations occur. d.