1) water is life ?
2)The ozone layer is a protective shell of the earth ?
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1. Water is essential to life because all life forms are dependent on it. ... Water is the medium of life. It is the most abundant compound found in all organisms. It varies from 65 to 89 % in different organisms.
2. The ozone layer acts as a protective layer for life on the earth because it absorbs harmful ultraviolet radiation of the sun. These radiations, if reach the Earth's surface, can cause skin cancer.
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Life is a characteristic that distinguishes physical entities that have biological processes, such as signaling and self-sustaining processes, from those that do not, either because such functions have ceased, or because they never had such functions and are classified as inanimate
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