Which of these is most likely a consequence of unhealthy eating?

Whic disease reduces bone density and causes the bones to become brittle

In the past week dylan, was laid off from work, was given notice he is in academic probation and was threatened to be evicted from his apartment. as a result, he has increased his usage of alcohol and cigarettes. which of these life skills would beneficial?

How harmful is it to smoke a pack of cigarettes a week?