Answer:
complement is a system of plasma protiens that can be activated directly by pathogens
Answer the Air Pollution From a Power Plant photograph. Tell students that pollutants emitted into the atmosphere do not stay in the atmosphere or even directly above the polluting source forever. They move throughout the atmosphere and are moved and removed by natural processes.
Explanation:
I would say A or C I’m not sure but if I had to choose A or C my best guess would be A
I hope this helps :)