13 - 5 = 8 (eight classical music discs were bought.)
The answer is A, because an HOV lane is used for people with 2 or more persons in the vehicle. There is usually a set time that people can use the HOV lane. It was made like that because people thought that when somebody would carpool or drive a coworker to their job, it would be a much faster and convinent way because the speed limit is higher in the HOV lane.
Answer:
Naturalistic observation
Explanation:
Observation is to watch what happens as a method of research.<em> Naturalistic observation is a research method that consists of observing the subjects in their natural environment without interventing.</em> In the example given this kind of observation happens because the observer is not interventing.
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The great pyramids have been threatened by the rising groundwater levels caused by the water infiltration from the suburbs, canals, and mass urbanization.
<h3>What is an environment?</h3>
An environment refers to the surroundings or conditions in which a person, animal, or plant lives.
In recent years, the great pyramids have been threatened by the rising groundwater levels caused by water infiltration from suburbs, mass urbanization, and irrigation canals.
Learn more about the environment here:
brainly.com/question/13107711
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