The basic functional unit of the kidney is which of the following?
a. nephron.
b. neuron.
c. ureter.
d. urethra.

Which statement best describes the nature of science? a. science discoveries using the latest technology are the most valuable. b. scientific theories and laws are based on beliefs and popular opinion. c. scientific ideas change over time as new information is discovered. d. science is superior to other fields such as art, philosophy, and music. i think its c

The arrows indicate the direction of wind flow. which place experiences monsoons?

What is the most abundant vertebrate on earth?