Rocks are composed of one or more different types of mineral.
Answer the following statement true (T) or false (F)
True
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Which statement about urban areas is supported by environmental analysts?
A. Most of the world's urban areas are not environmentally sustainable in the long run. B. Most of the world's urban areas are environmentally sustainable in the long run. C. Since the ecological footprint of a city does not extend beyond its border, cities are models of sustainability. D. The only truly sustainable places occur in large urban areas.
The addition of large amounts of bioavailable nitrogen and phosphorus to our streams, lakes, and coastal areas, is responsible for which of the following?
A) reduction in water levels B) lake size increases C) lake and stream eutrophication D) lake and stream magnetization E) increase in breast and prostate cancer in humans
The average GNI adjusted for PPP in Sub-Saharan Africa was
A) $2200. B) $3300. C) the lowest in the world. D) $2200 and the lowest in the world. E) $3300 and the second lowest in the world.
Explain the statement "the lower down in the food chain we eat, the greater percentage of solar energy we put to use, and the more people Earth can support" in terms of trophic levels and pyramids of energy
What will be an ideal response?