In which layer should bettina draw the arrow

Below is a diagram of the Sun. Bettina wants to place a circular arrow in one layer of the diagram to illustrate how energy is transferred in that layer.

In which layer should Bettina draw the arrow?

W

X

Y

Z

THE ANSWER IS W ON E2020

preservation because he preserves part of the land and preserves means save

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: