Answer :
The number of rattlesnakes in a forest ecosystem would be dependent on both the number of available prey and predators.
Predator, prey, and population size
The population size of an organism in an ecosystem depends on a variety of factors. Prominent among these factors are food availability and the population of predators in the ecosystem.
Rattlesnakes are predator snakes who also serve as prey to predatory birds such as hawks and owls.
Thus, the population of rattlesnakes would depend largely on the availability of prey as well as the population of predatory birds in the ecosystem.
More on factors that determine population size can be found here: https://brainly.com/question/15697245