Next week produces a heat wave in Prince George's County. Most scientists would say: A. Global warming is the cause

B. Human activity is the cause

C. Local temperatures over one week tell us more about weather than climate

D. Our climate is getting warmer

The difference(s) between the grand canyon and valles marineris is/are: (a) the grand canyon was formed by water, but valles marineris was not. (a) valles marineris is much longer than the grand canyon. (c) valles marineris is much wider than the grand canyon. (d) valles marineris has large volcanoes near it. all of the above

Which factors add to the greenhouse effect and are caused by human activities?

Which of the following insects is a decomposer? a. mosquito. b. caterpillar. c. beetle. d. none of the above.