Identify and describe the 3 types of barriers the skin forms:
a.
b.
c

Maintaining the balance of fluids in the body. Binding in moisture when necessary and preventing moisture loss.

Regulating body temperature: it insulates our body, conserves heat in cold conditions and perspires to cool the body down when it gets hot.  

Sensing pressure and pain: absorbing shock and alerting us to danger.

Guarding the whole body from external aggressors.

Explanation:

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: