When fresh river water meets the salty ocean the waters do a
They have different densities.
They form layers.
The fresh water floats on the salt water.
All of the above.

. ph changes the ability of them he enzyme to dissolve in water.

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.

d. planting trees

the trees take in carbon to make oxygen.

synapse nervous system