In a Reuters News Report Dated February 3, 2010, President

question 19

Multiple Choice

In a Reuters news report dated February 3, 2010, President Obama is quoted as saying, "By 2022 we will more than double the amount of biofuels we produce to 36 billion gallons, which will decrease our dependence on foreign oil by hundreds of millions of barrels per year." Use the following information to estimate the fraction of farmland in the United States that will be needed to meet this target in order to assess the impact on other uses of farmland, such as the production of food. (M = mega = 10⁶)
Farmland in the U.S. = 1.4 *10⁶ square miles
Energy density of biofuels = 100 MJ/gal
Annual biofuel production from farmland = 1,000 gal/acre
640 acres = 1 square mile
1 gal = 3.785 L
Mass density of biofuels: 800 g/L

• A) 0.4%
• B) 1.0%
• C) 4.0%
• D) 10%
• E) 40%

Analyze the impact of light quality on photosynthesis and plant growth.

Understand the key wavelengths of light essential for photosynthesis.

Recognize the roles and relationships between different molecules in photosynthesis.

Comprehend the nature of light as electromagnetic radiation and its significance in photosynthesis.

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Definitions:

Torana

Gateway in the stone fence around a stupa, located at the cardinal points of the compass.

Stupa Mound

A dome-shaped structure originally built to house Buddhist relics and serve as a place of meditation.

Triratna

A tripartite symbol of the three jewels of Buddhism—the Buddha himself, his dharma, and the sangha.

Mahadeva

refers to a principal deity, Shiva, in Hinduism, representing aspects such as creation, protection, and destruction.