Which of the following activities is most likely to result in nutrient pollution? a. cutting down trees
b. pouring motor oil down the drain
c. excess fertilizer use
d. none of the above

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Pl which diagram illustrates prophase?

What is the difference between sex-linked traits and autosomal traits in humans? a. sex-linked traits can only be passed from fathers to sons, while autosomal traits can be passed on from both parents to offspring of any sex. b. sex-linked traits are passed on through the x and y chromosomes, while autosomal traits are passed on through the other 22 chromosomes. c. sex-linked traits only affect females, while autosomal traits affect both males and females. d. sex-linked traits refer to genes that are on the x and y chromosomes, while autosomal traits refer to genes on all 23 chromosomes.