The answer is A. Carrying capacity
As population density increases, competition increases because there are more organisms competing for the same number of resources
It was Ptolemy who proposed that the center of the galaxy or even the universe is the Earth.
Copernicus contested the idea that the Earth is the center of the galaxy.
Planets revolve around the Sun in an elliptical path and not in a circular path. When the planets are near the Sun, their speed is faster.
Stabilizing selection, directional selection and disruptive selection are the three types of natural selection.
What are these types of selection?
Natural selection is the process wherein organisms get better adapted to their environments and tend to survive and produce more offsprings. It is basically a mechanism of evolution which favors those organisms that can better adapt to their environment.
Directional selection: this theory states that an extreme phenotype (a characteristic or trait) is favored over other phenotypes and this causes the allele frequency to shift in favor of the extreme phenotype over time. A particular trait, if favorable, will be expressed in the population at the most beneficial frequency.
Stabilizing selection: in this type, meaning a non-extreme trait is favored instead of one of the two extreme traits. Stabilizing selection is said to be the most common mechanism for natural selection, because most traits do not change drastically over time.
Disruptive selection: This selection is bimodal. It favors both of the extreme traits in a population.
So therefore, stabilizing selection, directional selection and disruptive selection are the three types of natural selection.
Learn more about natural selection here: brainly.com/question/23929271
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Power, which is measured in watts
(if that's the kind of answer you're looking for, of course)
