In the last line of the passage, the author writes, "they think that a gigantic meteorite hit earth over 65 million years ago." this statement is intended to
highlight text
a. introduce a new idea
b. contradict an earlier statement
c. give an example
d. provide an explanation

hello there,

guys i’m confused.

which rock will weather faster?

answer: b rock

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.

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explanation:

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