Substitution I believe is the right answer but I never learned identity property
Answer:
Increased eutrophication caused by high levels of nitrogen and phosphorous
Explanation:
Answer: making the body produce anti bodies
Explanation: that’s just what the body does.
B, if it has already been proven multiple time that something doesn't work why waste time doing the exact same thing and if you learn a bit more about the experiment it could change what you want to do.
