Can I get help with this science problem

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided

What is used to keep track of the gamates and possible offsprings combination

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt