Which of the following is the greenhouse gas that has increased in concentration, at least partly due to deforestation?
A. water vapour
B. carbon dioxide
C. ozone
D. chlorofluorocarbons
Answer: B
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A combination of related parts that interact in an organized fashion is a(n) ____________________. Fill in the blank(s) with the appropriate word(s)
Interest in continental drift waned until studies of Earth's magnetic field and oceanographic research showed that ____
A)present-day oceans basins are old features that resulted from the breakup of Pangaea B)continents were constantly being pulled toward the poles by magnetic forces C)present-day ocean basins are not as old as continents but instead, are geologically young features that resulted from the breakup of Pangaea D)iron-rich continental plate material was being pulled into the ocean by Earth's magnetic field E)present-day ocean basins are old features that resulted from erosion of continental coastlines
When a windmill turns to generate electricity, the amount of kinetic energy input in the process ________
A) is greater than the amount of electrical energy produced B) is less than the amount of electrical energy produced C) is unrelated to the amount of electrical energy produced D) equals the amount of electrical energy produced
What type of volcanic peak is steep-sided and composed of loose pyroclastics?
A. plutonic B. composite C. cinder cone D. shield E. lava dome