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Genetic drift, natural selection, and gene flow are factors that can cause changes in phenotype frequency within a population after each generation. These changes occur as a result of random chance events, differential survival and reproduction of individuals, and the introduction of new genetic material from outside sources, respectively.
The population will become extinct.
Because the actual population changes frequently.
Increased Population
Effect is what it changes or causes the subject to do. Effectiveness is how likely the effect will cause these changes in the subject.
A decrease in the marsh willow herb population in an area is likely to be caused by environmental changes such as increased water salinity levels, habitat destruction due to human activities, or competition from invasive species that outcompete marsh willow herb for resources. These changes can disrupt the plant's growth, reproduction, and ability to thrive in its habitat.
They will each become more and more different. Especially if their environments also change.They may become separate species.
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3. fish
Not much. While some animals are likely to die, a tornado is unlikely to make a dent in the population of any species.
As the population ages, more people will retire and others will be old enough to join the work force. This will make new relationships for current workers.
Competition between organisms (Apex)