FORESTRY
ECOLOGY AND ENVIRONMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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. Its population size is smaller than those of native species.
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. It is more energy efficient, so it eats less food.
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It is a predator of the native species.
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It often has no natural enemies
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Detailed explanation-1: -the new species will overpopulate. If a new species is introduced in an ecosystem where it does not have a known predator, the new species would rapidly increase their population because the population size is not limited by predators eating them for energy and nutrition.
Detailed explanation-2: -These species can cause costly economic and ecological damage each year including crop decimation, clogging of water facilities and waterways, wildlife and human disease transmission, threats to fisheries, increased fire vulnerability, and adverse effects for ranchers and farmers.
Detailed explanation-3: -When these non-native plants and animals establish themselves in our local ecosystems, they outcompete and dislodge species that have evolved specifically to live there. These plants affect us by degrading our soil, leading to erosion that can lower the quality of our water.