Smokers are at higher risk for tooth loss. in smokers, the periodontal tissues are continuously exposed to more than 4,000 toxins in smoke. a. both statements are true b. both statements are false in smokers, the periodontal tissues are continuously exposed to

The correct answer is A. Both statements are true.

Explanation:

Cigarettes contain more than 4000 toxins such as carbon dioxide, nicotine or cotinine that are extremely dangerous for our oral hygiene. Smoking is the principal actor for gum bleeding, which is likewise the leading cause of periodontitis, one of the major problems that can lead to tooth loss. Smoking can hide the effects that gum disease generates, the reason why smokers might not see the real effects until it is too late.

elizabeth loftus conducted a study to observe the reliability of eyewitnesses during the 1970s. their baseline was to define how accurate are the recollections of eyewitnesses.

her studies do not support the use of eyewitness. loftus mentions in her work that we are not required to recall some experiences, meaning that rarely an individual eyewitness testimony is trustworthy. a good example is presented in her work, where all individuals watched a video and were than asked "about how fast were the cars going when they hit/smash? ". the testimonies changed based on the word she used to make the question (hit or smash), proving the fragility.