We participate in the square cycle every time we breathe. tectonic nitrogen phosphorus

The correct answer is: nitrogen<br /><br />Explanation: The nitrogen cycle is the process by which nitrogen is converted between different forms in the environment. This cycle is essential for the survival of most organisms, as nitrogen is a key component of amino acids, proteins, and DNA. When we breathe, we inhale oxygen and exhale carbon dioxide, but the nitrogen in the air remains unchanged. Therefore, the nitrogen cycle is the one we participate in every time we breathe.