Answer:
Tropospheric ozone is harmful, damaging plants and human health while ozone at the stratophere level screens out mutagenic ultraviolet radiation.
Explanation:
Ozone is dangerous and harmful in the lowest layer of the Earth's atmosphere. This layer is called troposphere. The reason why it causes damage to plants and human health it is because ozone is a reactive gas that affects plant synthesis and causes smog (a form of air pollution that is particularly dangerous to sensitive respiratory diseases such as asthma). However, ozone is helpful in the second layer of the Earth's atmosphere: the stratosphere. It prevents and blocks dangerous ultraviolet radiation.
They are all top producers of diamonds
Answer:
The countries fit together like a puzzle and similar fossils can be found in both parts
Explanation:
The world was once a supercontinent and all of the land was once together and fit as a puzzle.
The second largest economic activity in Sub-Saharan Africa is farming
<h3>What is farming?</h3>
Farming refers to to the process of growing plants and animals.
There are two types of farming commercial farming and subsistence farming
commercial farming is the process of farming in large scale mostly using machineries while subsistence farming is a method of farming that is relatively small and hence di not require machines.
In sub-Saharan African mining is the major economic activity where countries like Nigeria depend more on extraction of mineral resources especially Gold and Oil.
The next after mining is farming
Learn more about sub-Saharan African here:
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