A large body of water with land all around it

i think its a lake

Explanation:

What do you call a large body of water surrounded by land?

A lake is a large body of water surrounded by land on all sides.

Explanation:

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

increase masses, decrease separation