Harmful and useful animals and plants for humans.

A person can get a lot of everything useful from living nature, but he should also be wary of some animals and plants. Useful animals for man are those whom he has tamed: Cattle, pigs, rabbits, cats, dogs. A person can also hunt wild boars, elks, foxes, deer for meat and fluff. Some animals harm humans. These are such animals as: ants, aphids, caterpillars, butterflies, weasels, wolves, foxes, wild boars. Also, a person grows a variety of cultivated plants, collects wild plants in forests, fields and steppes. All these plants serve as food or medicine for humans. But there are plants that secrete toxic substances that can even kill or cause severe poisoning.