Which layer of earth is like the shell of an egg? upper mantle inner core lower mantle crust

The right option is; crust

The crust is the layer of Earth that is like the shell of an egg.

The crust is the hard outer shell layer of the earth that lies on top of the mantle. The earth’s crust is composed of different types of rocks which are; igneous, metamorphic, and sedimentary rocks. The crust is of two different types which are; (i) the continental crust (thicker and located under the land), and (ii) the oceanic crust (thinner and located under the ocean).

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:

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.