Three characteristics that are unique to mammals include their  ability to feed their babies with milk made in their mammary  glands. Mammals also have hair on their bodies â¦and they have a  single bone that makes up their lower jaw.
buoyancy. n. 1. the ability to float in a liquid or to rise in a fluid. 2. (General Physics) the property of a fluid to exert an upward force (upthrust) on a body that is wholly or partly submerged in it. 3. the ability to recover quickly after setbacks; resilience.
The forces due to these impacts can be combined into a single force the buoyant force. The immersed object will be âlighterâ i.e. It will be buoyed up by an amount equal to the weight of the fluid it displaces. Partially submerged floating a03/p1/fluids/buoyancy.doc 2.