It is called probability that an event might happen on a scale from 0 to 1
an explanation of how or why something happens is called a hypothesis.
pseudoscience
A verb form used to show when something happens is called tense.
twice-a-day or it can be called semi-diurnal which relates to such occurrences as tides.
A reason for why something happens is called a "cause." It refers to the factor or circumstance that leads to a particular effect or outcome.
an event
Karma
The mathematical and computer science that helps creates and analyzes algorithms is called numerical analysis. People use this to help answer problems in the science, medical and engineering fields.
The science of how fossils form: what happens to organic matter, its traces and the organisms themselves after death is called: taphonomy
The chance of something happening can be called a probability.
There is something called the evolution of science.
A possible explanation is called a hypothesis.