Rounded depressions common in regions having limestone bedrock are known as ____________________
Fill in the blank(s) with correct word
sinkholes
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The presence of ____________________, which are incompletely melted pieces of rock within
igneous rocks, demonstrates that ____________________ occurs. Fill in the blank(s) with the appropriate word(s).
Which branch of government is responsible for overseeing the agencies that carry out government policies?
A. judicial B. executive C. legislative D. administrative E. military
Landslides due to the melting of permafrost ____
a. ?are shallow and only affect a few meters as the thawed layer slides off the remaining permafrost b. ?create rotational slumps as deeper thawed areas loosen the connection of permafrost to the supporting layers c. ?are extensive and damaging, where lakes and streams warm the ground d. ?create large translational slumps as unthawed permafrost slides over subsurface meltwater e. ?can be avoided if vegetation maintains a deep snow cover
The 41,000 year variation in the tilt of Earth's axis is called the:
a. precession cycle. b. eccentricity cycle. c. obliquity cycle. d. unicycle.