Which Substance Is of Great Concern to Scientists Studying Human-Generated

question 3

Multiple Choice

Which substance is of great concern to scientists studying human-generated greenhouse gases, and is thought to increase such that the earth's climate will be irrevocably changed by 2020?

• A)chlorofluorocarbons
• B)carbon dioxide
• C)methane
• D)nitrous oxide
• E)ozone

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Definitions:

Labour Climate

The overall environment that affects the relationship, practices, and conditions under which employees work in a particular area or industry.

Taxes

Mandatory financial charges or some other type of levy imposed upon a taxpayer by a governmental organization in order to fund government spending and various public expenditures.

Utilities

Services such as water, electricity, gas, and sewerage provided by public or private companies.

Y-Coord.

A term used to represent the vertical coordinate in a two-dimensional space, often used in mathematics and mapping to indicate vertical position.