Adog food company wants to compare a new lower calorie

Maintaining a healthy weight allows the respiratory system to work more effectively because a. oxygen is being delivered more adequately. b. the heart does not have to pump as forcefully. c. the capillaries are constricted. d. the lung capacity allows for small amounts of air.

You can add phyisical activity minutes to your day by uising a leaf blower instead of a rake

What is not true about me to metabolisms