What has society changed its view on smoking since 1960

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.

Can someone i have no idea of how to do this.

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere