Answer by JKismyhusbandbae: heroin
Why: Heroin and morphine are related. They are both derived from opium. And known as painkillers.
Physical activity is helpful for your heart muscle and also strengthens your immune system also good for your lungs and helps maintain your weight <span />
It is referred as <span>zone of proximal development. The zone of proximal development enables a person to distinguish what he or she is capable of with help towards others and without it. It is somehow related to the given sentence above where it shows how children can do on their own and with the help of another person.</span>
The answer is B. Trichomoniasis
It's caused by a protozoan called trichomonas vaginalis, the most common pathogenic protozoan in industrialized countries.
there are about 160 million pople infected by this worlwide and it transmited sexually. For women the common symptomps ar vaginitis and urehtritis for men.