The world's urban populations are ________
A) growing at about the same rate as the rural populations
B) growing at a faster rate than the global population as a whole
C) shrinking in developing nations
D) growing most rapidly in the developed nations
E) shrinking, compared to rural populations
B
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Children learning the process of good home gardening decide to help as best they can. Every day they walk along rows of bean plants, carefully inspecting each plant for insect and removing any that they find
However, the bean plants do not grow well and few beans form. Their parents notice the beans, inspect the plants and soil, and tell the children that walking around the plants every day has hurt the plants by A) compacting the soil, decreasing aeration and infiltration. B) increasing soil aeration and killing soil microorganisms. C) reducing the nutrient minerals in the soil. D) converting the topsoil into clay.
Match the rock type with the correct definition
A) Rocks that form from the crystallization of molten material B) Rocks that form when a pre-existing rock is altered due to heat and pressure C) Rocks that form from pre-existing materials going through lithification 1) Igneous 2) Sedimentary 3) Metamorphic
In the reaction CH2O(g) + O2(g) ? HCOOH(g) + H2O(g) which species is reducing agent?
A) CH2O(g) B) O2(g) C) HCOOH(g) D) H2O(g)
"Brown fields" is another name for
A. Abandoned, contaminated surface mines B. Degraded wetlands C. Abandoned, contaminated industrial sites D. Prairies converted into croplands E. Tallgrass prairies