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
Natural gas
explanation:
solar power, coal, and petroleum are used to power things (i.e. produce electricity)
C. The structure of a cell organelle is directly related to its function.
The answer is the occipital lobe of the brain
