Q1. What do you understand about the following ?
a) Primary producer​

Primary producers are organisms that acquire their energy from sunlight and materials from nonliving sources. Algae, higher plants, and some bacteria and protists are important autotrophs in running waters. Heterotrophs obtain energy and materials by consuming living or dead organic matter.

primary producers

Explanation:

they include plants, lichens, and moss, bacteria and algae. They live in and around organic matter. They are not mobile, they live and grow where there are nutrients to sustain them. In a terrestrial ecosystem they are mostly green plants (photosynthetically active)

example: grass

i think that the best answer would be c.

tell me if im wrong : )

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