Your immune system protects you from bacteria and viruses. Sometimes it misreads a harmless substance as a threat. When that happens, your body creates chemicals, like histamine, that trigger an allergic reaction. It's unclear what causes your immune system to make the mistake about certain things.
The substances that make up plankton and plants are converted into fossil fuels. Plankton breaks down into natural gas and petroleum, while plants are turned into coal. As it is now, by coal mining and exploration of oil and gas wells on land and offshore, humans harvest these resources.
It causes pathogens to stick together.
