Match each term with its definition. Match Term - Headwaters
- Lentic ecosystems
- Ecotone
- Eutrophication

A) Excessive richness of nutrients in a body of water Lentic ecosystem

B) The border between two biomes Ecotone

C) Formed by a body of standing or still water Eutrophication

D) The beginning and source of the river

this would be a math

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.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.