Billy and Bob want to know if the amount of baking soda added to vinegar will affect the height a rocket will launch. what is the independent and dependent variable thank you

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.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements