her is this from google
"A system of temporary reference points established in the field allows users to move freely within the study area without losing the geo-referencing. It allows the user to perform the mapping of trees, deadwood, transects, repeated measurements and data verification."
A collision could occur when the distance decreases and bearing between two vessel REMAIN UNCHANGED.
It is the responsibility of vessel operators that they are on look out and avoid all possibility of collision with other vessels. Operators are expected to operate at controlled speed, avoid careless boat operations and steer clear of restricted facilities.
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Answer:
b. a theory
Explanation:
A theory is said to be a well structured explanation of a result in particular field of study. A theory tend to follow series of steps in an attempt to explain a result ;
Hypothesis : This is said to be a knowledgeable guess in the field of sciences.
Observation : The scientist engage in thorough study or observation of the experiment or facts he wants to establish.
Experiments : The scientist engage in series of experiments to back up his fact and observation.
A theory is propounded if it is testable . The theory must have passed through a series of scientific research to become an establish facts. It must pass numerous scientific investigation and often involving contribution from well meaning scientist in that domain. The theory must be simple , precise and express-able so it can be repeated by other scientist. This established fact should not contradict previous principles or theory but instead expand and agree with others.
