Which of the following abiotic factors is the ultimate source of energy for ecosystems?
a)soil
b)water
c)the sun
d)temperature differences

The instructions for making proteins come originally from

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.