Adenine pairs with Thymine (A=T) AND Cytosine pairs with Guanine (C=G)
Infectious diseases are caused by microorganisms that enter your body, through a contaminated source, which can be food, water, a person, air, etc.
These microorganisms can be either bacteria, fungi, viruses, etc.
Hope it helped,
BioTeacher101
False: the dead sea is 8.6 times saltier than the ocean