When the water level of a stream or river exceeds its natural banks, it has reached its
a. plateau.
b. capacity.
c. flood stage.
d. crest.

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

Why is the bottom layer of a trophic pyrimid the