Section Review 1. Construct Make a table to record information about the four main organic
molecules that make life possible. The table column headings should be
"Molecule," "Description," and "How Used by Living Things."

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

Regarding most of the narrator’s story, which word best describes the tone?