Neutrons
The atomic mass is the weight of the protons and neutrons in the nucleus.
Creep is a solid material's tendency to deform permanently under pressure or stress.
So, a cracked telephone pole or a broken sidewalk would be examples.
Answer: It is called Parasitism.
Explanation:
Parasitism is symbiotic relationship where an organisms lives in or on it's host thereby feeding and causing harm on it host. Examples of such relationship is parasites like roundworm, ticks, fleas that feed on humans and cause harm.
The answer to this is a River System.