Gross Primary Production Is Higher in Tropical Forests Than Boreal

question 67

Multiple Choice

Gross primary production is higher in tropical forests than boreal forests primarily as a consequence of what ecosystem characteristic?

• A) Greater canopy layering in the tropics relative to the boreal zone increases leaf area index.
• B) Most trees in the tropics are broadleaf while boreal trees primarily have needle leaves.
• C) There is more available soil water in tropical forests than in boreal forests.
• D) Photosynthetic enzymes are more efficient in hot tropical climates than in cool, boreal climates.

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The requirement under the Patient Protection and Affordable Care Act (PPACA) of 2010 that firms with 50 or more employees pay for insurance policies for their employees or face a fine of $2,000 per employee per year. Firms with fewer than 50 employees are exempt.

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The Patient Protection and Affordable Care Act (PPACA), commonly known as Obamacare, is a United States federal statute enacted to increase health insurance quality and affordability, lower the uninsured rate by expanding public and private insurance coverage, and reduce the costs of healthcare for individuals and the government.

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