________ accounts for 60% of global warming.
A. Nitrous oxide (N2O)
B. Chlorofluorocarbons (CFC's)
C. Carbon dioxide (CO2)
D. Methane (CH4)
E. Ozone (O3)
Answer: C
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Finding several species of fossils, rather than just one, in the same rock layer is more useful to geologists because:
a) if the conditions were not right for fossilization for one species, maybe the conditions were better for other fossil species b) if some of the fossils are broken, others could be used as index species c) it indicates the sediments must have been deposited at the same time when all the species were present
List the three types of unconformity: _________, _________, ___________ Fill in the blank(s) with the appropriate word(s)
Discuss two climatic factors that are most important in the distribution and characteristics of biomes. Choose one biome and explain how these two factors impact the specific plants and animals found there
What will be an ideal response?
Where several valley glaciers have joined together, one result is ________
A) medial moraines B) paternoster lakes C) drumlins D) eskers E) arêtes