Answer:
The exchange of incoming and outgoing radiation that warms the Earth is often referred to as the greenhouse effect because a greenhouse works in much the same way. Incoming UV radiation easily passes through the glass walls of a greenhouse and is absorbed by the plants and hard surfaces inside.
Answer:
A. a primary source, because it is an excerpt of a radio address given by the president
Explanation:
The above excerpt is actually "a primary source, because it is an excerpt of a radio address given by the president".
Primary sources are materials which have first-hand information. It gives a direct account of the person involved or an event the person carried out.
The "radio address" of the president is actually an original work which makes it a primary source because it gives direct account of the president's speech.
Examples of primary sources include: letters, speeches, records, autobiographies, manuscripts, etc.
The opportunity cost of an item is what you give up to get that item.
I have no clue u mean the game halo?
