Answer:
mutualism - a mutually beneficial symbiotic relationship.
commensalism - a one-sided symbiotic relationship.
parasitism - one species lives on, in or with a host species.
competition - relationship in which organisms compete for resources.
Explanation:
Carbon dioxide is released by plants and humans
Answer: 1. Dwarf Star 2. Helium to Carbon 3. Xray
Explanation: I just took the test. Trust me!!!