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Coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus.
Winter is the coldest season of the year in polar and temperate zones (winter does not occur in most of the tropical zone). It occurs after autumn and before spring in each year.
Snow, the solid form of water that crystallizes in the atmosphere and, falling to the Earth, covers, permanently or temporarily, about 23 percent of the Earth’s surface.
Frogs are both land and water creatures that keep the environment in balance by acting as both predators and prey.