It means the scientific study of sight and the behavior of light, or the properties of transmission and deflection of other forms of radiation
Waterfall, I think
Keeps going
He is a United States solider who embraces the opportunity to fight and defeat communists forces in Vietnam.
The preposition is "in front".
The one which is no part of the rising action of "Raymond's Run" is C. Squeaky is responsible for taking care of Raymond.
This is actually part of the introduction or the setting, but important for the finale, when Squeaky decides that Raymond has what ti takes to be a fine runner, because he is always with her when practising.
