Answer:
Global warming.
Explanation:
Because it is an ecological problem that could be studied by modeling more easily than by observation or experimentation, because it occurs over a large area and a long period of time
Fixed for that allele
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If a fox and an eagle eat some of the same organisms in an ecosystem, the relationship between the fox and the eagle could be classified as competition. Competition both within and between species is an important topic in ecology, especially community ecology. It is one of many interacting biotic and abiotic factors that affect community structure. It is a major affecting the availability of resources in an ecosystem is the density of individuals, or the number of organisms living in a certain area.
A non-specific immune response (also called immunity) is antigen-independent while a specific immune response is antigen-dependent. The examples of the non-specific immunity are fever, phagocytosis by macrophages, skin and mucus. The example of the specific immune response is cytotoxic T-cells able to recognize antigens on infected cells and kill them before the infection could spread.
<span>the answer is Abiotic </span>
