A parasite is a type of a symbiont.
Parasitism describes a relationship between two organisms where one benefits, and the other is harmed. The parasite is the organism that benefits from the relationship, while the host is harmed by the relationship. Parasites can be a number of things including plants, animals and even viruses and bacteria.
A because let’s say the body temperature increases, the body’s mechanisms will obviously react to that positively by giving out heat or swear
That would be geographical information systems (aka GIS).
The ocean acidification is generally caused by the vast amounts of carbon dioxide that humans release in the air gettting absorbed into the ground, causing the PH of the water to rise.
Hopefully this helps!