Plants grow as new organic molecules are formed by plant cells. Most of the carbon in the newly created organic molecules of these plants ultimately came from
A) carbon dioxide in the air.
B) carbon dioxide released during the production of plant sugars.
C) proteins and carbohydrates absorbed by the roots of the plants.
D) carbon compounds absorbed from water.
A
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How do you encourage normal environmentalism?
a) Make the social structures of society amenable to environmentally friendly decisions b) Invest in small businesses c) Implement bottom-up environmental policy d) Lobby political powers for administrative change
All of the following are potential consequences of inadequate treatment of drinking water except ________
A) dehydration caused by drinking contaminated water B) contraction of gastrointestinal disease C) contamination of groundwater resources with harmful bacteria D) drinking water that contains feces
Although scientists think the actual number is considerably higher, there are at least ________ known species of plants and animals on Earth
A) 1,500 B) 15,000 C) 15,000,000 D) 1,500,000
What country in the European Union is the EU's leading exporter of agricultural products?
A) Germany B) Great Britain C) Italy D) Netherlands E) France