99% of all air is contained in the troposphere and stratosphere.
Answer the following statement true (T) or false (F)
True
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A playa, with its deposits of gypsum and halite, may form in a
A) yardang. B) ventifact. C) deflation. D) pan.
Sylvia Earle is leading a campaign called Mission Blue to finance research and to ignite public support for a global network of marine protected areas, which she dubs ____.
A. oceanic protected areas (OPAs) B. hotspots C. hope spots D. underwater wilderness E. megareserves
What is a way that governments can encourage reuse and recycling?
A. Governments can set fair market prices for various products. B. Governments can force people to recycle with negative incentives. C. Governments could remove the harmful Superfund Act. D. Governments could encourage the use of POPs in controlling waste. E. Governments can increase subsidies and tax breaks for reusing and recycling
In some habitats, the extinction of certain amphibian species could lead to the ____ of certain species of other amphibians, aquatic insects, reptiles, birds, fish, and mammals.
A. natural selection B. speciation C. coevolution D. proliferation E. extinction