What are two ways the size of a population can increase in decrease

The size of a population increases when the number of births is greater than the number of deaths. The size of the population decreases when the number of births is less than the number of deaths.

Explanation:

The size of a population can increase or decrease due to the influence of several factors. However, in summary, we can say that the size of a population increases when the number of births is greater than the number of deaths. This can be influenced by the quality habitat, excess natural resources such as food and water, reduced number of predators, among others.

On the other hand, the size of the population decreases when the number of births is less than the number of deaths, this can occur through the unavailability of safety habitat, lack of natural resources, existence of a disease or pest, excess of predators, among others .

wegner's theory did not explain how the continents could move

explanation:

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these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.