I think it is 3 but im not 100% sure
<span>The light of color, and the type of plant would be controlled variables. The growth rate would be the dependent variable, and the independent variable would be the amount of light.</span>
Answer:
The sternum, thoracic vertebrae, and ribs protect the heart and lungs.
Explanation:
The skeleton can be divided into the <em>axial skeleton</em> (the skull and the vertebral column), <em>visceral skeleton</em> (ribs and sternum) and the <em>appendicular skeleton</em> (extremities).
The function of the <em><u>visceral skeleton</u></em> is to <em>support and protect</em> the first portion of the digestive and cardio-breathing apparatus.
In mammals, the second part of the vertebral column (thoracic vertebrae), the ribs and the sternum delimitate a protective box for lungs and heart.
It would be hydrogen and oxygen molecules. H: hydrogen O: oxygen, the H2O is the product.
