As a result of air pollution in urban areas, more children have ________
A) emphysema
B) sickle-cell
C) asthma
D) malaria
E) schistosomiasis
C
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Match water-cycle terms that are most closely related.
- Infiltration
- Melt Water
- Precipitation
- Runoff
- Transpiration
- Water Vapor
Group B:
- Gas
- Groundwater
- Ice
- Plants
- Rainfall
- Stream
What happens to tropical soils when the rainforest is cleared?
a. The soil improves in that soluble nutrients are no longer depleted by the trees. b. There is little effect on the soil because of its depth of richness. c. Clearing interrupts the critical nutrient cycle and leads to soil leaching. d. The soils stabilize and become excellent for grain crops.
The disruption of sediment by feeding and burrowing organisms is called ________.
A. tilling B. respiration C. sediment exchange D. bioturbation
Use the Venn diagram shown below to answer this question.
Which section of the diagram represents large-grained rocks?
A. Volcanic B. Both volcanic and plutonic C. Plutonic