Which court case examined the constitutionality of a complete ban on handguns?
a. presser v. illinois (1886)
b. quilici v. the village of morton grove (1982)
c. united states v. cruikshank (1876)
d. united states v. miller (1939)

What process is believed to be responsible for the formation of the grand canyon? a) diverging tectonic plates b) converging tectonic plates c) erosion over a long period of time d) caving in of the ground due to erosion

Why does the blending of many different diciplines present both challenges and opportunities to enviromental scientist?

Which of the following characteristics would be more important to an organism adapted for life in a marsh than for an organism adapted for life in a river? tolerance for variable ph tolerance for variable salinity tolerance for variable pressure tolerance for variable water velocity tolerance for variable water availability