<u>Answer:
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The build-up of three oxygen created our ozone layer around two billion years ago.
<u>Explanation:
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- The ozone layer is a part of the stratosphere which is located right after the troposphere in the atmosphere of the Earth.
- The ozone gas is made up of the abundance of three oxygen molecules combining with the ultraviolet radiation emitted by the Sun.
- The development of the ozone layer happened around two billion years ago when the oxygen concentration levels on the planet began to rise slowly and gradually.
Answer: The answer is a Dead Zone.
Explanation:
Yes, seismic waves are the result of energy released by the movement of rocks along faults. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Answer:
Meteorological drought- when dry weather influences an area
Answer:
hundredth
Explanation:
because its in the decimal part.