3. Acid rain occurs over the northeastern United States largely because of the production of
A. ozone in the atmosphere.
B. sulfur oxide from burning coal.
C. carbon dioxide from plants.
D. carbon monoxide from automobile exhaust.

Identify the advantages and disadvantages or renewable and nonrenewable energy resources

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d. the size of the geographic area inhabited by a population can cause speciation.

Explain why biological control methods are generally environmentally superior to chemical pest control methods.