Living in poverty
living in a food desert
being unable to buy fruits and vegetables
being part of a family that regularly eats fast food
Answer:saliva cleanses the mouth
Explanation:the work of the saliva is never to cleanse the mouth because there are no actions put in place for the saliva to exit the mouth....and the saliva contains chemicals for breaking down protein and soften food cos it is produced in small quantities not enough to cleanse the mouth
Negative feedback loops are important because it helps organisms maintain homeostasis.