The definition of symbiosis has varied among scientists. Some believe symbiosis should only refer to persistent mutualisms, while others believe it should apply to any type of persistent biological interaction (i.e. mutualistic, commensalistic, or parasitic).
The Golden Pledge, which is a System Plus Warranty with a 20 year leak guarantee, can pay for itself within the first ten years, sometimes many times over. The System Plus transforms the normal warranty by removing the small print.
Promise rings can mean: I will be faithful to you. Promise rings can mean: I will return to you. Promise rings can mean: I will keep a specific promise to you. Promise rings can mean: I will keep your secret Promise rings can mean: I love you.