What is the main function of the respiratory system? to circulate blood throughout the body by means of oxygenated air to manage the intake of oxygen and the output of carbon dioxide to make sure that air, rather than food, gets propelled through the airways to allow room for air to push through into the lung cavity

b

Explanation:

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Making it a point to work out with a friend is an example of a fitness goal, is a true statement

Explanation:

It is a method through which you can achieve your fitness goal. Fitness goal is defined as an aim to keep yourself healthy and active. Working out with a friend gives you more consistency and motivation to work out and achieve your goal. There are two main types of fitness goals, long-term and short-term fitness goals