When estimating free flow speed in the HCM procedure for analyzing basic freeway segements, select all of the factors that are considered to affect the estimate of free flow speed. a. Lane widths greater than 12' The percent of trucks, buses and RVs in the traffic stream.
b. Right-side lateral clearences of greater than 6'
c. The number of ramps located between 3 miles upstream and 3 miles downstream of the midpoint of the basic freeway segment under study Lane widths less than 12'
d. Right-side lateral clearences of less than 6' The peak hour factor.

pathogens is the answer

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.

answer a scar develops;