If scientists would like to test the effect of pollution in a local valley, which model would be best? A. map

B. drawing

C. globe

D. terrarium

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

What state of matter is ice a. liquid b. element c. solid d. gas

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.