Ahigh concentration of carbon dioxide in the blood
a. slows oxygen exchange in the lungs
b. decreases breathing rate
c. increases heart rate
d. inhibits ventricular contraction

the elements of art are the visual tools that the artist uses to create a composition. these are line, shape, color, value, form, texture, and space.

the principles of art and design are balance, contrast, emphasis, movement, pattern, rhythm, and unity/variety.