Idk but i could use some points so help a brother out!
A. Plants and animals do not interact with each other.
Plants and animals HAVE to interact with each other in an ecosystem. Some animals may need to eat certain plants to stay alive. Plants also help provide c02 for the atmosphere.
The O stars is the most luminous, then B, then A, F, G, K, and M stars are the least luminous_____ there must be a relationship between mass and luminosity.