What are 4 ways bacteria and viruses can be transmitted?

Bacteria can be transmitted by contact, ingestion, breathing in, and can also get inside open cuts in the skin. viruses ingested, air born which means you can breathe it in, you coming in contact with someone or something infected by the virus. you can also contract it from your environment in some cases. 

The equator absorbs the most sunlight

The higher you go up the less oxygen there is