Answer:
Temperate climates are generally defined as environments with moderate rainfall spread across the year or portion of the year with sporadic drought, mild to warm summers and cool to cold winters.
They both deal with diseases just that pathogens cause disease while antibodies fight against disease
D. a viral disease because it is known and unknown and spreads.
Industrial produce chemical reaction environment
I think it is C, but I could be wrong because I am taking an educated guess.