To put a duvet cover on a comforter easily, first flip the duvet cover inside out. Find the top two corners of the duvet cover and hold them in each hand. Next, locate the top two corners of the comforter. Flip the duvet cover right side out and slide it down over the comforter until it is completely covering it.
Your left lung is not as big as the right lung.
The reason why is so that the right lung can make room for the liver. The left lung is narrower because it needs to make room for the heart. Another difference between the two lungs is that the left has two lobes, while the right has three.