Which eras ended with a mass extinction?

O A. Paleozoic and Precambrian

O B. Mesozoic and Paleozoic

OC. Mesozoic and Cenozoic

O D. Cenozoic and Paleozoic

If body temperature increased above its normal range but was regulated by a positive feedback loop, what would likely occur?

Why would it be important to find out/who the virus came from?

It is the name of the process in which an organism makes a new organism. A. mutation B. fertilization C. variation D. reproduction

In the video for this lab we discussed the evolution of cheetahs. cheetahs evolved to be faster because faster individuals could catch the gazelles.

All of the following methods would increase the solubility of a solid solute, except for A. increasing the temperature heating the solution. B. stirring the particles more vigorously. C. turning down the heat. D. chopping the solid into finer pieces.

Which of the following could describe a population that is decreasing in size

Which creature cannot survive in the presence of oxygen? Give Examples. What does the creature need to survive instead of oxygen?

Why nitrogen must cycle through an ecosystem

How many cell types are present in your groups set of organisms?

Which of the following is the functional unit of a myofibril? a. sarcomere b. myofilament c. sarcolemma d. endomysium