Which of the following best describes the human population from early times to the present?
A) early rapid growth, which has increased rapidly in the last 20 years
B) early rapid growth, which has leveled off to a nearly constant rate in the last 20 years
C) slow, uneven growth until the 1800s, then increasingly rapid growth
D) rapid, explosive growth throughout the period
E) slow, steady growth throughout the period
C
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What features do geologists use to correlate rock layers across great distances? Choose all that apply.
1. uncommon minerals within rock layers at different locations 2. index fossils within rock layers at different locations 3. the position of a distinctive layer within a sequence of strata 4. All of the above
How do plates move at transform plate boundaries?
a) Plates move apart. b) Plates move toward one another. c) Plates do not move. d) Plates slide past one another
Why is the formation of air masses associated with high pressure systems rather than low pressure systems?
What will be the ideal response?
What is cyclogenesis?
A. forces creating low pressure B. poleward deflection of winds C. formation of cyclones D. origination of frontal system E. position of the jet stream