Which of the following factors is most likely to decrease the stability of an ecosystem?
A
The removal of a species
B
An increase in plant biodiversity
C
The removal of an individual animal
D
An increase in animal biodiversity

Answer:

A

Explanation:

The removal of a species can reduce the food source of another species, which can cause that species to slowly die out, where other animals that consume the dying species start dying out... ect.

So it decreases the biodiversity which can mess with populations.

If the species is a herbivore, it could cause the plants that are eaten by that herbivore to get out of control in population, which can fight for sunlight and resources with other species causing ecosystem collapse.

In an ecosystem, the removal of a species can decrease the stability. Thus, option A is correct.

Biotic factors are the basic unit  of ecosystem where the living beings interact with each other and their environment.

There are two components of an ecosystem such as biotic and abiotic components, include distribution of energy in our environment.

Biotic components can be classified into autotrophs, heterotrophs and  decomposers based on mode of nutrition.

Autotrophs are producer such as plants as they produce food through the process of photosynthesis.

Heterotrophs are the consumer depend on producer for their nutrient, which is further classified into three categories.

Primary consumers are herbivores rely on producers for food while secondary consumers depend on primary consumers. They can be carnivores or omnivores.

Tertiary consumers depend on secondary consumers for food. some quaternary consumers are also seen in some food chains.

Decomposers include saprophytes such as fungi and bacteria which lie on decaying organic matter and essential for the ecosystem

Hence, option A is correct.

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