SCIENCE
ENVIRONMENTAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Species extinction is a naturally occurring process.
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The rate of species extinction can increase during periods of rapid environmental change
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The current rate of species extinction is much faster than the normal background rate.
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All of the above are true
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Detailed explanation-1: -The extinction of any species is an irreversible loss of part of the biological richness of the Earth. Extinction can be a natural occurrence caused by an unpredictable catastrophe, chronic environmental stress, or ecological interactions such as competition, disease, or predation.
Detailed explanation-2: -Extinction occurs when species are diminished because of environmental forces (habitat fragmentation, global change, natural disaster, overexploitation of species for human use) or because of evolutionary changes in their members (genetic inbreeding, poor reproduction, decline in population numbers).
Detailed explanation-3: -Habitat destruction is the greatest contributor to the extinction of many species. This destruction is ongoing in both terrestrial and aquatic biomes, with approximately 80% of all extinctions being attributed to human caused habitat destruction.
Detailed explanation-4: -Low population size-A population that is limited in number is vulnerable to extinction. Low trophic level of the food chain-Scarcity of food cause the organisms to starve till death. Narrow geographic area-Narrow geographic boundaries prevent the outbreeding of the organisms.