When a plant does not get enough water and starts to wilt, it
A) opens its stomata, stops transpiration, and generates oxygen but not carbon dioxide.
B) opens its stomata, starts transpiration, and generates carbon dioxide but not oxygen.
C) closes its stomata, stops transpiration, and no longer brings in carbon dioxide from the air.
D) closes its stomata, starts transpiration, and no longer brings in oxygen from the air.
C
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Which of the following is true of the current materials revolution that is occurring?
a. New materials are being created that act as ideal replacements for many materials. b. Nanotechnology is likely to be a large component of the materials revolution. c. Many new materials are more efficient and cost-effective than their counterparts. d. The production and use of many new materials are far less environmentally damaging. e. All of these answers are true.
The value of currency compared with that of another country is called the ________ ________
Fill in the blank(s) with correct word
At a latitude of 80? S, the prevailing surface winds would be:
a. easterly. b. southerly. c. westerly. d. northerly.
Sea level rose 1 foot in the 20th century. It is expected to rise again by ________ in the 21st century.
A. 1.0 to 1.5 feet B. 2.0 or more feet C. at least 8 feet D. 6 inches to 1 foot E. 6 inches or less