Recycling is the process of turning used waste and materials into new products. This prevents potentially useful materials from being wasted as well as reducing energy use and pollution.
The human body turns beta-carotene into vitamin A and carrots are one of the best sources for beta-carotene. Vitamin A is important for the health of our vision (including our night vision) as well as our bones, teeth and skin.
Saturn is very light as it is made up of more hydrogen than helium so it is less dense. If we could fit Saturn into a bathtub it would float (but that would have to be one big bathtub!)