I think it's D, because theoretical yield is like, the yield you'd get if 100% of the reactants formed to make product. Well that's how I think of it, but it has something to do with limiting reagents and stuff. Sorry this isn't a really detailed explanation.
You’ve not put anything below so I’m not sure what the options are but the relative charge of a proton is +1
Decomposer, decomposers include fungous, bacteria, worms. They break down trash and bad things and concert it to soil.
Crayfish are very intolerant of pollution and other human-generated fouling of their environment. ... This abundance may be due more to the acid-generated absence of fish which prey on crayfish than to a direct, positive influence of the acid on the crayfish itself.
