Sand dunes are large piles sand that can be found in the desert. what causes these sand dunes?
a.)water
b.)wind
c.)earthquakes
d.) volcanoes

When should a bar graph be used? a. when there is no independent variable. b. when the independent variable is continuous and does not show a relationship to the dependent variable. c. when the independent variable is continuous and shows a causal link to the dependent variable. d. when the independent variable is composed of categories and does not show a relationship.

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat