A skull and crossbones pictogram indicates this kind of information about a chemical. A) Irritant
B) Flammable
C) Gases under pressure
D) Acute Toxicity

Why are radio observatories located in valleys far away from urban centers? a. to shield them from electromagnetic interference b. to avoid sound pollution c. to avoid disturbing people living in the city d. to shield them from water vapor

Which allows college students to work part time jobs to pay for educational expenses ?

Margaret, a vegetarian, is looking for a mushroom with a meaty texture to grill and eat instead of a hamburger. which of the following mushrooms would you recommend?                 a.  lobster      b.  matsutake      c.  shiitake      d.  portobello