Blood turns red when we start bleeding because the chemical composition of our blood changes when it reaches the air. This is known as oxidation, and no, it is probably not okay if your blood doesn't turn red once it reaches the outside of your body.
It's d because he might be depressed
Answer:
Bacterial; viral
Explanation:
Sexually transmitted diseases can be caused by bacteria, viruses, and protozoa. Sexually transmitted diseases caused by protozoa can easily be treated. Bacterial STD can be treated with antibiotics during the initial phase of the disease so bacterial STDs are curable.
Viral STDs are not curable but their symptoms can be managed by taking medication. Viral STDs are not curable because they incorporate their DNA into the host genome and can remain in the latent phase in their host cell.
Answer:
Repeated heroin use changes the physical structure13 and physiology of the brain, creating long-term imbalances in neuronal and hormonal ...