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.
Better robots and that are not very expensive. an easier way for salt water change into fresh water fasting without so much money. <span />
<span>Air pollution badly affects the health of an individual. Polluted air leads to viral diseases. so the answer is environmental </span><span />
Cell are important to the body because cell are the building blocks of life that help the human body function ex muscle, Skelton eg