Answer:
The longest time period is eons.
Atmosphere.................
You should be able to find this on a map.
I think the best answer is B. Both are controversial since both projects are very destructive to the environment. Environmental issues rise during the Pacua Dam and the Intercoastal Highway Projects. The construction of these projects are said to destroy and damage ecosystem.
I am absolutely sure that <span>the percent of the Sahara Desert is covered by sand sheets and dunes is definitely 25 %. Even though it might seem weird, it is actually correct and here are the pic from artcicle about Sahara which will pose as a proof : )
Do hope it will help!
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