Surface features

Desert Deserts get so little precipitation that they can’t support much life, but there are desert-dwelling plants and animals. A true desert gets less than 400mm (16in) of rainfall per year. They make up about one-third of the Earth’s land surface. Rainforest Rainforests have very high levels of rainfall, usually a minimum of 1,750mm (68in) each year. They cover 5% of the Earth and are the source of about 25% of our natural medicines, and home to millions of species of plants and animals. Oceans Saline or saltwater makes up about 71% of the Earth’s surface. No other observable planet has as much water on its surface. The total volume of saltwater on Earth is approximately 1.3 billion cubic kilometres (311 million cubic miles). Ice caps Ice caps and glaciers…

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All About Space Book of the Solar System (Digital) - 1 Issue, All About Space Book Of The Solar System 4th Edition

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