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.

[Q]: Question: An _____ pulse rate is a sign of less oxygen to cells. 
 Answer: increased
[A]: 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.


[Q]: Question: Carla is pushing two carts down a street. One cart is heavy, the other is light. The light cart, compared to the heavy one, will accelerate 
 Answer: quickly
[A]: The greater the mass of an object, the less it will accelerate when a given force is applied.


[Q]: Question: Rita took away resistors from her parallel circuit. The overall resistance goes 
 Answer: up
[A]:
Increasing the number of resistors connected in parallel decreases the overall resistance of the circuit.