Week+14(9-14)

= Monday ,April 9 = = = = Tuesday, April 10 =

Global Warming an increase in the earth's average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect.

Carbon Dioxide A colorless, odorless gas that is present in the atmosphere and is formed when any fuel containing carbon is burned.

Ozone Layer A region of the upper atmosphere containing relatively high levels of ozone, located mostly within the stratosphere, with the greatest concentrations occurring from about 15 to 30 km (10 to 19 mi) above the Earth's surface.

= = = Wednesday, April 11 = = = = Thursday, April 12 = = = = Friday, April 13 =