The Greenhouse Effect Is a Natural Phenomenon That Keeps the Earth's

question 37

Multiple Choice

The greenhouse effect is a natural phenomenon that keeps the earth's surface warm. Without greenhouse gases-water vapor, carbon dioxide, methane, nitrous oxide, halocarbons, and ozone-life as we know it wouldn't exist. The current problem is that

• A) it is difficult to distinguish between climate change and global warming.
• B) the atmospheric concentration of greenhouse gases has reached its highest level in 400,000 years and will continue to rise, as will global temperatures, without actions to slow it down.
• C) scientists cannot agree on a general model of how the greenhouse effect went from being a positive to a negative and life-threatening force.
• D) global warming actually benefits 90 percent of the world's population, so it is difficult to mobilize the will to address the anthropogenic causes of climate change.
• E) most scientists dispute the anthropogenic reasoning for high concentrations of greenhouse gases.

---

Definitions:

Official Unemployment Rate

The percentage of the labor force that is jobless and actively seeking employment, as calculated by government statistics.

Christmas Season

The period leading up to and including Christmas Day, often associated with increased retail activity and festive celebrations.

High Unemployment Rates

A situation where a significant portion of the workforce is without jobs, typically indicating economic distress.

Blue-Collar Workers

Employees who perform manual labor, often in industries like manufacturing, construction, and maintenance.