Which group in this food web would most likely have the greatest biomass? . . . a) owls
b) oats
c) rats
d) snakes

The image shows ekgs of a person with normal heart waves and of a person having tachycardia. based on this image, what kind of condition is tachycardia? a. the heart beats abnormally fast. b. the heart beats abnormally slow. c. the right atrium of the heart stops working. d. the left ventricle pumps less blood to the aorta.

What material did the moon come from?

Which factor that affects biodiversity?