OBJECTIVE LIFE SCIENCE
ECOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
. Its population size is smaller than those of native species.
|
|
|
. It is more energy efficient, so it eats less food.
|
|
|
It is a predator of the native species.
|
|
|
It often has no natural enemies
|
Detailed explanation-1: -When a new and aggressive species is introduced into an ecosystem, it may not have any natural predators or controls. It can breed and spread quickly, taking over an area. Native wildlife may not have evolved defenses against the invader, or they may not be able to compete with a species that has no predators.
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.