Stable elements are those which have atleast one isotope with no tendency to "decay", i.e., change into anotherelement.
Answer: Organic
Explanation: Organic brain syndrome, is also know as organic brain disease, refers to any syndrome or disorder of metal function whose cause is alleged to be known as orgainc or physiologic rather than purely of the mind.
Answer:
Energy that is not used in an ecosystem is eventually lost as heat. Energy and nutrients are passed around through the food chain, when one organism eats another organism. ... In each case, energy is passed on from one trophic level to the next trophic level and each time some energy is lost as heat into the environment.
