C.
it is not a, because variation is necessary for natural selection
it's not b, because variation is necessary for natural selection
it's not d because natural selection will not occur if the organism is well adapted to its environment.
Birds. Since birds can fly, they could get to the barren island and on their way, they could pick up seeds in their feathers and carry them to the barren island.
Wind. Wind blows everywhere on earth
Floating vegetation
References
Yes. It is a mechanical process.
Answer:
Predation.
Explanation:
Limiting factor refer to resources or environmental condition that limit the growth or distribution of organisms in the ecosystem. This make the organism not to occupy their original niche. Predation is a limiting factor. Predation refer to ability of an organism to prey on another organism or capture it. Predation is a density dependent factor whose effect on population determined the total size of the population. Fox chasing pika is an example of predation.
