A population refers to a group of organisms of the same specie that living together in a specific area. All the members are specifically of the same specie and possess that same breeding and living habits.
According to the given excerpt, the 'herd of zebras' collectively illustrates a population. A herd of zebras demonstrate a group zebras with the same biological breed and specifications.
'Using hot tap water for drinking or cooking is a no-no, the Environmental Protection Agency warns. That's because hot tap water can leach harmful contaminants like lead from your home's service pipes into the water you might be drinking or using to prepare hot foods.'
