Green Revolution techniques ________
A) have increased crop yields but may not be sustainable
B) focus on organic farming
C) focus on sustainability
D) have contributed to an increased diversity of foods in the human diet
E) focus on preserving biodiversity
A
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Janet pulls a 10-kg cart with a constant force of 30 N. The acceleration of the cart is
A. 30 m/s2. B. 3.0 m/s2. C. 10 m/s2. D. 0.3 m/s2.
The IPCC Fifth Assessment Report on climate change announced that
A) global coordination to address climate change is not needed since it is mostly a local issue. B) no consensus exists on whether current climate change is natural or anthropogenic. C) the observed climatic changes of the past half century are similar to changes that have occurred through out the past couple hundred of years. D) much uncertainty still remains related to the warming of the climate. E) scientists are 95 to 100% certain that human activities are the primary cause of present climate change.
Human activity has affected every aspect of the water cycle. Identify three ways that humans have altered the water cycle. What are the major concerns regarding our alteration of the water cycle?
What will be an ideal response?
Which of the following statements describes an urban heat island?
A. Conservation techniques are used to reduce energy consumption in urban areas. B. Air temperatures are warmer in urban areas than in surrounding rural areas. C. Factories are situated in a single location downwind from urban areas. D. Energy use is concentrated in urban areas.