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Explanation:

In 1A, the producer is the grass, the primary consumer is the sheep, and the secondary consumer is the human. Producers make their own energy source (hence the name). In this situation, grass (and other autotrophs) are able to produce their own food through photosynthesis. The sheep is considered a primary consumer, since it is the first to interact with the energy produced by the grass in terms of the food chain. On a similar logic, the human is the secondary consumer as it gets its energy from the sheep and not directly from the grass.

We can apply the same logic for question 1B. The phytoplankton makes its own food, therefore qualifying as a producer. Prawns consume the plankton, so that makes them a primary consumer. Again, in terms of the food chain, the prawns get their energy from the producers directly. Tuna are secondary consumer since they get their energy from the prawn and not directly from the plankton.

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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explanation:

did you fail the test? xd