Since cells can't store atp for a long time, how do they store energy?

ATP is not a stable molecule and it is only synthesized or produced when cells needed energy to perform cellular activities.

The energy stored in the form of sugars i.e. sucrose (glucose + fructose) which is a disaccharide. The cell performs aerobic respiration whenever ATP is required  to perform cellular acivities.

the answer is trees if i'm not mistaken

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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