John has been having difficulties getting out of bed, is not interested in going out with friends, and hardly ever answers the phone. he has let a number of bills go unpaid, he is sleeping 12–14 hours a day, and he cannot concentrate at work. he has called in sick to work at least once each week. john is most likely suffering from disorder.

major depressive disorder

Explanation:

John is showing symptoms of major depressive disorder.

Major Depressive Disorder or major depression is characterized by a combination of symptoms that interferes with a person's ability to work, sleep, study, eat and enjoy pleasurable activities. Major Depression is debilitating and prevents the person from functioning normally. Some people may have only one episode in a lifetime, but most often they have multiple episodes.

Depression is common, but it is a very serious disease. Most depression sufferers need treatment to improve.

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.