scientist found a new ocean zone, which has over 100 new species of sea creatures
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Answer:
climate change
Explanation:
scientists are telling people what to do to save the planet
I believe that the answer is b
The earth's atmosphere consists mainly of nitrogen and oxygen with smaller proportions of other gases such as carbon dioxide. The amount of carbon dioxide in the atmosphere is maintained through a balance between processes such as photosynthesis, respiration and combustion. However this balance is being affected by human activities which are polluting the atmosphere.
The proportion of these gases in the atmosphere is as follows: nitrogen is the most abundant at 78%, oxygen is next at 21%, while others include carbon dioxide at 0.037% and argon at 0.9 % .
The answer is B and I need 20 characters so I am typing random words
