Answer:
rocks and sediments, while the rest is located in the ocean, atmosphere, and in living organisms.
Explanation:
carbo is found in these places for example:
Answer:
Are caused by bacteria viruses or parasites
Explanation:
not all cause visible symptoms
it would not be a sexual transmitted infection if not caused by sexual contact
STIs can be contracted by men and women
Answer: important because it helps make sure no one will get hurt
Explanation:
if there weren't lab rules then people could burn themselves or get severely hurt