It has about one-third the density and stiffness of steel; it is ductile and can be easily machined. Naturally, pure aluminum reacts readily with oxygen in air creating a thin barrier oxide layer known as the aluminum oxide next to the metal surface that is about 2-3 nanometers thick.
Orange skin resulting from excessive carrot consumption sounds like something out of a science fiction novel or a bizarre comedy. However, the fact is that yellow skin pigmentation resulting from increased beta-carotene levels in the blood is a real clinical condition called carotenemia. Though carotenemia is harmless, it's easy to confuse with jaundice in young children.
Adding Carrots to Your Diet. Just one carrot every day could help to keep you healthier than ever before. When purchasing carrots, you should look for carrots that are firm and bright orange. These are guaranteed to contain all the vitamins and nutrients you'll need to get the biggest benefits from eating them.