Light travels fastest through
a. air.
b. water.
c. metal.

The kidneys, ureter, bladder, and urethra the body maintain homeostasis through the process of a. excretion b. specialization c. respiration d. digestion

As the human population grows, what happens to our natural-resource requirements? o they increase o they decrease o they do not change. they go in cycles

Why do oceanic plates tend to subduction when colliding with a continental plate