What is:
Behavioral isolation Temporal Isolation
Habitat Isolation

*Behavioral isolation occurs when members of a population diverge in their behaviors over time. Eventually, they are unable to mate and become separate species

*Temporal isolation, in biology, a type of reproductive isolation mechanism among sexual organisms in which the differences in the timing of critical reproductive events prevent members of closely related species, which could otherwise breed with one another, from mating and producing hybrid offspring.

*Habitat isolation occurs when habitat preferences lower the probability of mating between individuals associated with differing habitats.

Dehydration synthesis

Explanation:

In dehydration reaction, their are two products among which one is water. This is because of two monomers that is two single molecules react with each other to form product of the reaction.

The H molecule attaches with the OH that result in the formation of water molecule.