The correct answer is c. Genetic Variation. Bacteria are very numerous, ad random mutation of bacterial DNA generates a wide variety of change, including resistance.
Answer:
A simple example of the Fourth Amendment would be the right to protect yourself from unreasonable search and seizure. For example, a police officer does not have the right in your home and/or property without a warrant. Hope this helps...
Explanation:
Hormones are a group of chemicals released by exocrine glands

These hormones are directly secreted into bloodstream from where they reach the site.
In finding disease we must find its cause and we are made up of cells so every disease has something to do with our cells so if we understand we can know what is Poisson or what will damage it like smoking .
Hope this helps
Brainliest?