The greenhouse effect, which traps heat inside the atmosphere, comes from increases in the carbon dioxide content in the air. Its result is known as

Grassroots lobbying is often very effective in bringing specific issue positions to a legislator's attention because ________

A.legislators pay attention to their constituents B.they compose letters that are very compelling C.legislators ignore the opinions of their constituents D.people are not allowed to make direct contact with their legislators

In the late 1940s, how did presidents begin to hone their leadership skills to further nurture their relationship with the public?

a. radio b. movie shorts in cinemas c. television d. newspaper editorials e. town hall meetings