Not all mixtures are solutions. It has to be a special homogeneous bond mixture composted of two or more substances
It is Nucleic Acids, they consist of long chains of units like the proteins, but still both are different.
B.
Viruses are classified as biological agents instead of a living things, $& they are only made of genetic material.
Answer:
Vaccinations
Explanation:
For example, if a disease has an R0 of 18, a person who has the disease will transmit it to an average of 18 other people. That replication will continue if no one has been vaccinated against the disease or is already immune to it in their community. So if you have (for example) a vaccination then you're less likely to get it, resulting in a lower R0
