Product #: X2705Regular price $28.99 Save $-28.99
Earth is home to millions of different forms of life including bacteria, animals, plants and humans. At present it is the only place in the Universe where any kind of life, simple or complex, is known to exist. About 71% of its surface is covered with water, giving it the characteristic blue appearance from space. This presence and abundance of liquid water makes it unique compared to planetary neighbors. Liquid water is a fundamental element for life to exist.