Jamie is estimating the portion of his ecological footprint that arises from the food he eats. What property of the food should he measure?
A. Its cost to Jamie or his family
B. the carbon dioxide that its production adds to the atmosphere
C. the total area of land or water resources that is needed to provide and transport the food
D. the total volume of fossils fuels, fertilizer, fresh water, and other resources that are needed to provide the food

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.