Which term best demonstrates when an organism is better adapted to the environment that they live in and are more likely to survive and reproduce? a) natural variation b) natural selection c) speciation d) living

The correct answer would be B) natural selection

Natural selection is the process by which nature selects or favors the survival and reproduction of the organisms which are better adapted to the environmental pressure such as changes in climate, predators, competition et cetera.

For example, the frequency of dark-colored peppered moth increases during the industrial revolution, development of long necks in giraffes to reach the food high in the trees et cetera.

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explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.