Since 1900, greenhouse gas emissions associated with burning fossil fuels and deforestation have warmed Earth's atmosphere by approximately ________
A) 0°C B) 3°C C) 1°C D) 5°C E) 8°C
Answer: C
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____________________ involves using natural or genetically engineered plants to absorb, filter and remove contaminants from polluted soil and water.
Fill in the blank(s) with the appropriate word(s).
Most soil erosion prevention measures
A. only allow the planting of deep-rooted crops. B. try to slow down wind and water velocity. C. try to compact the topsoil. D. keep the topsoil covered at all times.
Distinguish between the terms weather and climate, and briefly discuss how each affects species distribution within ecosystems
What will be an ideal response?
At the 2008 Olympics the Jamaican runner Shelly Ann Fraser ran the 100. meter dash in world record time of 10.78 seconds. What is this speed in miles per hour? [1 mile = 1.609 km]
A) 2.08 mph B) 4.81 mph C) 20.8 mph D) 48.1 mph