Which group makes up the greatest total mass of marine life?

Me with these questions if you’re it sure don’t answer

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?

Abiologist counts the number of rabbits in a population each year and observes a decrease in population. since the coyote population has exploded, the biologist concludes that the coyote population has had a negative interaction with the rabbit population. which describes the biologist’s actions? a.) experimentationb.) inferencec.) observationd.) interacting