In what way is drainage density affected by (a) soil characteristics, and (b) rainfall characteristics of a region?
What will be an ideal response?
Answer: Drainage density is increased by greater amounts of runoff, which may result from impermeable soils and/or higher rainfall.
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When the environmental lapse rate exceeds both the dry adiabatic lapse rate and the wet adiabatic lapse rate of a parcel of air, that air parcel contains:
A) absolutely stable air. B) conditionally unstable air. C) absolutely unstable air. D) air that cannot reach the lifting condensation level.
The Earth's largest mass extinction coincides with ________ in Siberia.
A. a significant climate change B. a massive meteorite impact C. expansion of glaciers D. flooding of continental areas E. massive volcanism
Sharp ridges called ________ separate adjacent glacially carved valleys.
A. moraines B. cairns C. arêtes D. tarns E. cirques
What types of geologic evidence are used to infer past glaciations?
What will be an ideal response?