What gas, found in the air around us, used by the respiratory and cardiovascular systems?

Oxygen.

Explanation:

Gas exchange between Alveolar spaces and capillaries. Respiratory system is to move two gases: Oxygen and carbon dioxide.

his week a heat wave will be hitting, and most of the country will be experiencing temperatures above average for july. due to humidity, the temperature outside can feel even warmer than it actually is. this adjusted temperature, often referred to as the “feels like” temperature is called the heat index. the chart shows the heat index, which is calculated based on temperature and relative humidity. use this chart to answer the following questions.