In the autumn, many birds will collect seeds and then hide them in various caches throughout their habitat. the birds will guard their caches from other birds, and move the caches if they start to dry out. these caches provide a food source for the birds during the winter. what is an abiotic factor that contributed to the evolution of this set of behaviors?

The correct answer is temperature and humidity.

The abiotic factors are non-living factors in an ecosystem that affect the organisms and their lifestyle. In this case, low temperature and low humidity lead to the conditions that are unfavorable for birds. So, the birds must adapt to these factors by hiding the food in the caches.

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.