filtering is the action of separating elements using a filter, that is to say, literally, a material only allows certain elements to pass. example: a colander.
Explanation:
in a city it may be red / green lights ( for circulation )
Explanation: The Nazca plate is going under the South American Plate which is a subduction zone. The Nazca plate is more dense which makes it subduct under the South American Plate. This is evident by the volcanoes in South America
