a scientist performed an investigation with two species of protozoa. for setup 1, a sample of each species…

a scientist performed an investigation with two species of protozoa. for setup 1, a sample of each species was placed in a separate test tube containing a constant source of food. for setup 2, the scientist then combined populations of the different species into the same test tube. the test tube contained a constant supply of food. the graphs show the population growth for each species during the investigation. which statement is best supported by the investigation results? a population size is limited when species compete for resources. b population size remains constant when species do not compete for resources. c when different species share a habitat, the growth of both populations is negative. d when different species have unlimited habitat, the growth of both populations is exponential.

a scientist performed an investigation with two species of protozoa. for setup 1, a sample of each species was placed in a separate test tube containing a constant source of food. for setup 2, the scientist then combined populations of the different species into the same test tube. the test tube contained a constant supply of food. the graphs show the population growth for each species during the investigation. which statement is best supported by the investigation results? a population size is limited when species compete for resources. b population size remains constant when species do not compete for resources. c when different species share a habitat, the growth of both populations is negative. d when different species have unlimited habitat, the growth of both populations is exponential.

Answer

Brief Explanations:

In setup 1, species are separate with no competition for resources and show population growth. In setup 2, when combined and competing for resources, population growth is affected. This supports the idea that population size is limited when species compete for resources. Option b is incorrect as population size grows when not competing, not remains constant. Option c is wrong as populations don't necessarily have negative growth when sharing habitat. Option d is not supported as the investigation doesn't deal with unlimited habitat.

Answer:

A. Population size is limited when species compete for resources.