I believe it’s carbon dioxide, because you use your respiratory system to breathe in oxygen, and oxygen goes through your circulatory system. And you breathe out CO2.
Answer:
A. Crunches
Explanation:
Crunches are an exercise which you lift your upper back from the ground(or head) in a laying position on your back. This exercises your abdominal muscles, which is around your tummy area.
Drinking one standard drink will increase your BAC by about 0.2.
B. To provide a standard way to orient body and enable precision when discussing human anatomy
Answer:
(option B)
performing the test for 1 hour
Explanation:
edgenuity 2020
