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.

Input: Consider Input: Question: An _____ pulse rate is a sign of less oxygen to cells. 
 Answer: increased

Output: This causes the delivery of less oxygen to the cells, and this stimulates the heart rate via adrenalin, so that pulse rate increases in an effort to deliver enough oxygen to cells.


Input: Consider Input: Question: If Milo is travelling underground and he moves closer to the Earth's surface, what happens to the pressure around him? 
 Answer: decreases

Output: Pressure: Pressure increases with depth, but increased pressure raises the melting temperature, so melting of rock is less likely to occur at higher pressures.


Input: Consider Input: Question: Milo was playing around with water by changing the pH level. If he raised the pH what would happen to the acidity of the solution? 
 Answer: it would decrease


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