Quotation marks, also called 'inverted commas', are of two types: single and double. British practice is normally to enclose quoted matter between single quotation marks, and to use double quotation marks for a quotation within a quotation:
The oceans absorb the sun's heat, transferring it to the atmosphere and distributing it around the world via the ever-moving ocean currents. This drives global weather patterns and acts as a heater in the winter and an air conditioner in the summer.
Why are oceans important? Oceans are the lifeblood of planet Earth and humankind. The air that you breathe, the water you drink, the food you eat, the products that keep you warm, safe, informed, and entertained â all can come from or be transported by the ocean. YOU need the oceans to survive!