While visiting the galapagos islands in 1835, charles darwin collected over thirteen different species of a type of bird called a finch. he later observed that the birds were similar in many ways but often differed in the size and shape of their beaks. which statement best summarizes darwin's explanantion for the different beaks he observed in these finch species?
a) the beaks changed so they could eat different foods.
b) the beaks of each finch species were the result of natural selection.
c) the size and shape of the beaks differed because of the effects of artificial selection.
d) the size and shape of the beaks differed because of different climates found on the islands.

/the trachea, commonly known as the windpipe

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: