What chemicals can cause a chemical burn on skin

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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

If your goal is to improve your person relationships with your friends at school, which category would it fall into? a. physical b. emotional c. social d. academic

Which of the following is an example of a chronic disease? question 7 options: flu tuberculosis salmonella diabetes