Answer:
They can travel through vacuum.
Explanation:
Sound waves are vibration that travel through particles such as solid, liquids, and gas.
It is usually to cover up some mistake or area of weakness. Sometimes it is to brag about something and make themselves look better.
A: It has a range of 14
Explanation:
I haven't done this in a while but this is the only option that makes sense
The switching from old gas guzzlers to more fuel-efficient cars is an example of substitution effect.
Substitution effect is the switching of customer from a more expensive product to a cheaper product. This is usually because of an increase in price or a decrease in the customers income.
Substitution effect can be positive for consumers if they can continue to by the products they like. Also, this effect can be negative for consumers if it results in fewer choices of that product or products of lower quality.
Find out more at: brainly.com/question/22079450
