Tropical, temperate, and cold are categories that apply to which of the following?
a. Deserts
b. Grasslands
c. Forests
d. forest and grassland
e. desserts, forests, and grassland
E
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The reactants shown schematically below represent iron oxide, Fe2O3 , and carbon monoxide, CO. Which of the following is the correct full balanced chemical equation for what is depicted?
A. Fe2O3 + 3 CO ? 3 FeO2 + 2C
B. Fe2O3 + 3 CO ? 2 Fe + 3 C2O
C. Fe2O3 + 3 CO ? 2 Fe + 3 CO2
D. Fe2O3 + 3 CO ? 3 FeO + 2 C
Briefly explain the interaction between mutations, "survival of the fittest," and adaptation or adaptive traits.
What will be an ideal response?
On the world temperature map for January (like Figure 3.17), notice that the west coast of the United States is warmer than the east coast if you look along the same latitude line. What is the best explanation for this?
A) The west coast is near an ocean. B) The Sun has a stronger effect on the west coast. C) The ocean current on the west coast is a warm current, whereas the ocean current on the east coast is a cold current. D) The wind blows from west to east.
Subsurface mining is used extensively in the extraction of ________
A) limestone, natural gas, and peat B) coltan C) coal, diamonds, and gold D) oil sands