Question

why are sea otters considered to be a keystone species A. Their Numbers are large. B. The otters keeps other organisms numbers in balance C. no organisms eat the river otters

Answer 1

B. The otters keeps other organisms numbers in balance

Step-by-step explanation:

Sea otters are top predators in their ecosystem, and their feeding behavior helps to keep the populations of their prey, such as sea urchins, in check. Without sea otters, the populations of sea urchins would explode, leading to overgrazing of kelp forests, which would result in a loss of biodiversity and negatively impact the entire ecosystem.