Are predators the only cause of population? Why? How can limited resources
affect a population?

If plants were to die out, then the bottom of the food chain would eventually die out due to starvation, then they’d go extinct. This would continue up the food chain until finally, the top predators, die after all their prey dies.

The correct answer is a. we know this because n (hap) + n (hap) = 2n (dip).