Answer:
Elements are pure substances because each element is made up of a single kind of atom.
Explanation:
True. precipitation can take the form of any type of water.
1. geologic time
2. stratum
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The ozone layer protects us from the harmful emission of rays directly to the environment. Absent this added layer of protection we humans will be susceptible to various forms of cancer due to over radiation and eye problems such as cataracts. It is estimated that 10% of the world's population will face the consequences of ozone depletion this year and these numbers were continue to rise as time progresses.
