lesupervich2
Answered

Succession occurs because _______.



A

organisms gradually change the environment


B

climax communities are not possible


C

dominant organisms drive out pioneer species


D

ecosystems never reach a sustainable point



Verified Answer :

MissPhiladelphia

For the answer to the question above, I think it is a, because Succession occurs because, as more organisms invade a habitat, they change the environment. In this way, the environment becomes able to support more kinds (and more complex forms) of organisms.

Correct answer: A) Organisms gradually change the environment

Succession occurs when a disturbance takes place in the environment, it can occur either by the disturbance of minor or major order disturbance.

The major disturbance can be caused due to the natural cause like the volcanic eruption and minor disturbance caused due to a natural or human cause like the forest fire.

Based on the type of disturbance succession is classified into two types of primary and secondary succession.

Primary succession is said to occur when a community or a group of the species evolve from a barren land. The land is fresh and new and no life is found on it.

Example: Succession after the volcanic eruption is said to be primary succession.

Secondary succession is said to occur when the disturbance destroys the whole ecosystem, but still, there is an availability of soil, nutrient, and seed in the ecosystem.

Example: Forest fire

 



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