They are primary subtractive colours, because each of them can be formed by subtracting a primary additive colour from the white light (blue, green, and red).
not really familiar with all this but I think 1. Relative dating is where they estimate or relatively guess around how old it is so you could just put something like "an estimate of the age" or something
Answer:
There are three
Explanation:
a large natural or artificial lake used as a source of water supply.
a supply or source of something.
a place where fluid collects, especially in rock strata or in the body.
