The Canadian dollar (symbol : $ ; code: CAD) is the currency of Canada. It is abbreviated with the dollar sign $ , or sometimes C$ to distinguish it from other dollar-denominated currencies. It is divided into 100 cents.
Mystery of how sperm whales hold their breath for 90 minutes solved as scientists discover the key is unique protein in their blood.
A whale uses it s blowhole to breathe in air and when you see water spurting from a whales blowhole that s just the water vapour from the whales lungs and any water around the blow hole being blown into the air as it breaths out. 1  Actually whales don t breathe underwater. 2  They hold their breath underwater instead.