Are vaccines good? I wanna know if some people say no

if you are talking about a flu shot then yes

Explanation:

b/c when they give you the flu shots it is a smaller version of the flu only weaker, so what it does is basically tricks your body into making the cells needed for fighting off the flu when and if you get it, either way i am allergic to the flu shot so it doesn't matter to me

answer; /// i believe the correct answer is (reactants);

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.