In the Three Domain system of taxonomy, living things are first placed in three groups based on the outstanding features of their cell structures. What aspect of cell structures do most animals and plants share in common to set them in the shared domain, “Eukarya”? A. cell structures defined by cell membranes
B. an undefined nucleus
C. chlorophyll structures
D. rigid cell walls

It is A

B is prokaryotes

C is only plants or cells that use photosynthesis and eukarya are broader than that

D is too specific as well as many eukarya don't have rigid cell walls

Explanation:

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and colour.

explanation:

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.