Water Cycle
where can you find autotrophs on the energy pyramid?
Where is the bottom?
What is a heterotroph?
an organism that eats other organisms
Humans get the Oxygen we need by
What must happen to the rock in order for plants to absorb the phosphorus within them?
What is weathering
What percentage of water on earth is useable to use?
What high energy molecule is carbon stored in living things?
What is Glucose?