Must contain producers, consumers, decomposers and dead inorganic matter
The closer a planet is to the Sun, the stronger the Sun's gravitational pull on it, and the faster the planet moves. The farther it is from the Sun, the weaker the Sun's gravitational pull, and the slower it moves in its orbit.
Answer:
I think d is I thinks only
C) matter is changed into various forms but the total quantity remains unchanged.
