Which statement describes how pioneer species and climax communities are different? a)pioneer species tend to have large body sizes, and climax communities contain species with only small body sizes. b)pioneer species mark the end of succession, and climax communities mark the beginning. c)primary species have many species types, and climax communities have few species. d)primary species have large numbers of offspring, and climax communities contain species that have small numbers of offspring.

D). Primary species have large numbers of offsprings, and climax communities contain species that have small numbers of offsprings.

An ecological succession is a process of gradual changes occurs in a biological community with respect to changes in the non-living abiotic factors  (water, air and sunlight) and with respect to time until the ecosystem attains stability. Primary or pioneer species are the species which invade the previously barren and primitive landmass for their survival. These species make the environment suitable for the growth of other species. These grow and develop in the initial stages of succession. These species are simple organisms which reproduce asexually and produces large number of offsprings. Examples are lichen and moss. Lichen grows on the surface of rocks and acids released by them causes withering of rocks into soil which facilitate the growth of mosses and other plants. Climax community develops in an ecosystem after replacing many previously inhabiting species. Climax community develops in the end of the ecological succession. It contains species which are highly complex and uses sexual reproduction for the production of offsprings which are less in number as compared to those produced by pioneer species by asexual reproduction.  

its D hope you get the answer/.

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c. parental

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