In some regions, robber crabs are being threatened because they’re popular delicacies in restaurants and common souvenirs for tourists. Why do you think it’s important to preserve these crabs? Can you think of another environmental condition that could affect the population of these crabs?

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:

condenser is used to focus in the light microscope.

answer: i feel like it would be 3

explanation: