Which of the following is not used ahead of time to prevent a harmful accident in the science lab? a. lab apron b. eye/face wash station c. goggles d. materials safety data sheets

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.