A lone male wolf, who doesn't have a pack, travels the forest. When he reaches a new hill that he hasn't been on before, he spends a large amount of time sniffing the trees and rock outcrops. Finally, he turns and heads back from where he came, recognizing this is the territory of another wolf. What's most likely responsible for communicating this information to the wolf?

The correct answer is pheromones.

Explanation:

The chemical substances, which are produced and discharged by various kinds of animals into their surroundings, to mark their territory and affecting the behavior of the individuals of the same species are termed as pheromones.  

The animals like wolves use the chemical messages known as pheromones by applying their sense of smell. The pheromones or the chemical messages are used for communication between various individuals of similar species.  

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.

b. lithosphere, asthenosphere, mesosphere   is the answer most likely