In the facilitation model of succession A. Later species facilitate the persistence of pioneers. B. Early species facilitate the next disturbance. C. Early species facilitate colonization by later species. D. Late species facilitate dispersal by early species. E. None of the above.

Option-C

Explanation:

Ecological Succession is the phenomenon by which the ecosystem develop and change over time. The ecological succession represents the pathway which shows how the ecosystem of a particular area has changed.

The classical model for this succession is known as the facilitation model which suggests that the initial species or the pioneer species which have established in the area modified the area for survival which facilitated the other species to grow there. Once the pioneer species modified the area, the later species colonized the area and flourished.

Since early species facilitate colonization of the later species, therefore, is the correct answer.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

i believe the answer is c