I am not sure because there may be more context, but here is what I am guessing the answer is.
As Bryson pedaled uphill both his heartbeat and breathing rate increased. His breathing rate increases to provide the body (more specifically, exercising muscles) with oxygen at a higher rate and his heart rate increases to deliver the oxygen (and glucose) to the respiring muscles more efficiently.
Answer:
what kind of question is that
The three groups of amphibians: Salamanders, Frogs, and Caecilians are different because they look different as adults. Salamanders have tails and they have four weak short limbs that allow them to walk instead of jump. Frogs have fours legs with strong hind legs and no tails. Caecilians have no legs and they are burrowing animals.
Answer:
I believe it's G. Solution
Explanation:
Hope my answer has helped you!
