the biggest threat to the health of our estuaries is the
a. erosion due to the constant movement of water, either tides, sea level flux, or currents.
b. direct and indirect activities of man that contribute to pollution and deposition of
sediments.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.

silt loam

hope this

i won't lie i don't know so go online and ask google thats what i do