Bacteria are an important part of the life cycle because they: fertilize egg cells help plants and animals grow decompose dead plants and animals protect plants and animals from illness

decompose

Explanation:

My thought process for this problem; bacteria cannot fertilize egg cells. Sperm does that through reproductive processes. Bacteria does not help organisms grow. Bacteria can be decomposers and thrive off of a dead host for as long as the bacteria gets said nutrients from the body, there is good bacteria in your digestive system that keeps you healthy, but for the most part bacteria is harmful and can cause illness, so I believe the best answer is decomposition! Hope that helps!

because the light is a great source of energy for the plants to survive. (i hope this )

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.