Yeah super mean question but, A :,)
<span>At what age do babies understand object permanence?
10 months</span>
One function is that they treat and prevent diseases
They also have the function of shutting down business in the case of a medical emergency
<span>Sleep deprivation can increase a teen's chance of drug abuse </span><span>and d</span><span>rug abuse usually increases sleep problems.
</span>hope that helps!!!
