16. Which statement about energy use in the United States is correct?
a. The United States has the world's highest fuel economy standards,
b. The United States is the world's leading producer of wind energy.
c. The United States lacks sites that can be used for geothermal energy.
d. The United States does not subsidize ethanol duc to corn's high nct energy,
e. The United States uses cogeneration to produce more than half its energy

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Which statement about the pancreas is not true? a. it is an endocrine organ in the abdomen. b. it release chemicals into the digestive system. c. it releases insulin to increase glucose levels. d. it release hormones into the bloodstream.

Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior