Which of the following is NOT a common source of air pollutants?
A. agriculture
B. burning yard waste in your back yard
C. driving a car
D. applying fertilizer granules to your yard

Which best describes how parents affect the genotype of a child? a.the parents decide what to feed their child b.the parents choose whether to educate their child c.the parents allow their child to stay up late d. the parents pass along genes to the child

Which of the following is not a characteristic of carnosaurs? a. long narrow skulls b. strong forelimbs c. horn projecting from their skulls d. none of the above

Why is it important that fibrin is insoluble in water?