A food pyramid is a represntation of predatory relationships in the food chain.
I'd have to say either 1 or 3. I would choose number 3.
It occurs at plate boundaries. Hope I helped!
With stabilizing selection, the phenotype for a trait does not influence survival. Stabilizing selection reduces the amount of variation in a trait.
Disruptive selection increases the amount of variation in a trait. With stabilizing selection, extreme individuals have high biological fitness.