Cuneiform cartilage is also known as wedge shaped cartilage. This cartilage is yellow in color and present on the either side. They are present in the front of the corniculate cartilage.
The rod shaped cartilage are present in pair and present on the mucous membrane folds. This cartilage connects the arytenoid cartilage to the epiglottis. This cartilage helps in the support of the vocal folds.
Among the given choices, the only positive effect that may be thought off with the increase in level of CO2 in the atmosphere is the increase of plant growth. Carbon dioxide is an essential compound in the photosynthesis of plants. Therefore, the answer should be letter C.
