The automobile engine is the largest source of **<span>carbon monoxide**</span> gas.
It was believed that even numbers are unlucky.
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Explanation: </u>
It is an old superstitious belief that even numbers are unlucky. In respect of the same superstition, a gun salute is set off odd numbers.
It is a gesture of bestowing great honor on a significant individual. Since long back in history, symbolism has been denoted to every numerical known. Hence, firing a gun for a certain of an odd number of times symbolizes varied kinds of respect in every country.
Some countries fire shots 21 times because number seven is sacred and lucky. Hence ![7 \times 3 = 21.](https://tex.z-dn.net/?f=7%20%5Ctimes%203%20%3D%2021.)
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Levi's brand of denim jeans.
Answer:
Making Government More Efficient and Transparent.
Post government spending online. ...
Make government data machine-readable. ...
Consolidate duplicative federal agencies and programs. ...
Cut government energy expenses. ...
Improve cyber security. ...
Using the Internet and Technology as a Force for Democracy
Explanation: