An ecosystem has experienced a recent decrease in its plant populations. which of the following is a possible reason for the decline?
a. an increase in the number of predators
b. a decrease in the number of prey
c. a decrease in the available water
d. an increase in the available land space

A possible reason for the decline could be a decrease in the available water. The basic nutrient of plants is water, as the substance that they use to live are made of substance in water plus solar energy. If one of these two factors experiments a decline, this could be a reason for the decline of plant as well. Obviously the decline of plants then will have a multitudine of other effects on the ecosystem.

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.