Please help.
Biology.

You can separate them according to the shapes of their beaks.

Some have longer, pointier beaks whilst others have flat and short beaks.

This is because they eat different things: seeds vs worms and insects.

This means that the shape of their beak is an adaptation (it enables their survival) because it makes it easier for them to consume food.

This is known as occupying different niches in the habitat, because even if they all live in one area, they will eat different things, meaning that they will always have enough food to survive.

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:

d. planting trees

the trees take in carbon to make oxygen.