if the acid and base solutions are of equal concentration , what volume of acid will titrate a 20 ml sample of the base

it should be all of them because it asks if you included all of those in your answer

explanation:

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

all eukaryotic cell have mitochondria : )

idk what the question is about