I believe your answer is B.Good Luck mate.
Orbits a star gravity makes spherical at least as large as mercury clears orbits of other objects
The correct answer is; C. the ecosystem’s resources
The carrying capacity for a species in an ecosystem is primarily determined by the ecosystem’s resources.
The carrying capacity of a species in an ecosystem is the largest population size of the species that can be supported indefinitely by the ecosystem upon the availability of resources such as food, habitat, water, and other resources in the ecosystem. The carrying capacity for a species in an ecosystem is mainly determined by the ecosystem’s resources. Competition, population size, disease, and the amount of resources that each organism consumes in the ecosystem are the factors that can influence the carrying capacity of a species in an ecosystem .
Darwin also suggested a mechanism for evolution: natural selection, in which heritable traits that help organisms survive and reproduce become more common in a population over time. A heritable trait is one that's passed on from parents to children by way of genes.
The answer C the theory of evolution
