Ozone is dangerous to human health only when it is found in
a. stratosphere b. troposphere c. mesosphere d. thermosphere

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b. through genes c. through seasonal cycles d. through hibernation

Which of the following is the sl unit used to measure temperature a. kilogram b. liter c. meter d. kelvin