Which of the following toxins can be found in secondhand smoke? a. arsenic b. tar c. carbon monoxide d. all of the above

When trimming plants and vines: a. burn all the poisonous plants b. touch poison oak and poison sumac with your bare hands c. wear gloves d. cut as quickly as possible

Active immunity refers to: a. the defenses people are born with. b. temporary immunity granted from another source. c. immunity gained through immunization and exposure to diseases. d. natural immunities that protect humans from other animal diseases

Mechanical sissy washers are required to have