The changing appearance of the Moon during the lunar cycle is a result of changes in - a the amount of light the Moon emits. b the shadows Earth casts on the Moon. c the amount of sunlight that hits the Moon’s surface. d relative positions of Earth, the Moon and the Sun.

D. relative positions of the earth, moon, and sun.

Explanation:

whether or not the moon is full or is crescent shaped depends on whether or not the earth is casting a shadow on it, or for example, when a solar eclipse happens, the moon goes directly in front of the sun from a humans perspective.

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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