____________________ is a significant rise in extinction rates above the background level
Fill in the blanks with correct word
Mass extinction
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Capetown, in southwest Africa, is influenced by the ________ ocean current
A) Benguela B) North Atlantic Drift C) Mozambique D) Arctic Circumpolar
The most recent analyses of polar ice cores have given us the ability to profile global climate change back as far as ________ years
A) 300,000,000 B) 100,000 C) 1000 D) 800,000 E) 50,000
Why is the 500-mb level chart important for forecasting?
A) It demonstrates cloud cover. B) It helps determine surface temperatures. C) It helps determine the appropriate rate of adiabatic cooling. D) The winds at the 500-mb level determine the direction of movement for weather systems.
What is meant by the term sustain ability?
A. Food production is sustained by fertilizers. B. Soils are sustained by conservation measures. C. A system or process can be maintained for an indefinite period of time. D. Resources are replenished by geological processes.