TASK DEFINITION: In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.
PROBLEM: Question: If John increases the rate at which gas exits the bottom of his rocket, what will happen to the upward momentum of the rocket? It will 
 Answer: increase

SOLUTION: The rocket goes upwards because the hot gases shoot downwards out of the nozzle. The faster the gases go downwards, the faster the rocket goes upwards.

PROBLEM: Question: Less oxygen absorption means _____ oxygen in the blood. 
 Answer: less

SOLUTION: Smoking reduces the amount of oxygen available for diffusion at the lungs, so less oxygen gets absorbed and blood is oxygenated to a lesser degree.

PROBLEM: Question: If Mary is cleaning her pool and she lowers the pH value of the water, what happens to the acidity of the water? 
 Answer: increases

SOLUTION:
Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.