2. Los planetas pueden estar rodeados de diversos satélites, asteroides, meteoritos, etc. Como denominamos el satélite que posee la tierra: A. Deimos
B. Fobos
C. Luna
D. Marte

3. Se han formulado hipótesis acerca del origen del sistema solar, cual es la teoría que plantea que una estrella intrusa paso cerca del sol, y su atracción gravitacional le arranco fragmentos que dieron origen a los planetas.
A. Hipótesis nebular
B. Hipótesis de las mareas
C. Teoría del big bang
D. Todas las anteriores

4. Cuál es un planeta enano?
A. La Tierra
B. Júpiter
C. Saturno
D. Ceres
5. ¿Cuál es un asteroide?

A. Vuelta
B. Ida
C. Blancanieves
D. sol

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:

carbon atoms, hydrogen, oxygen, and nitrogen.