asked 96.7k views
3 votes
A testable question is, “How does the amount of exercise affect heart rate and breathing rate?” Which is a controlled variable?O Amount of exerciseO Heart rateO Breathing rateO Temperature in the room

1 Answer

4 votes

Answer

Temperature of the room

Step-by-step explanation

The room temperature can be controlled compared to all other options.

answered
User Kaptah
by
7.8k points
Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.