Answer:
The total value of goods produced and services provided in a country during one year.
Explanation:
If a hot gas cloud is moving toward us, the frequency of the emission lines will be more elevated than those of a gas cloud that is inert or stationary.
<h3>What are emission lines?</h3>
Emission lines are indicative of a bright line in the spectrum of emission related to gas or vapor.
Thus it is correct to state that If a hot gas cloud is moving toward us, the frequency of the emission lines will be more elevated than those of a gas cloud that is inert or stationary. This is because gases expand as they get hotter.
Learn more about emission lines at;
brainly.com/question/24176807
#SPJ11
Cool ranch Doritos and kool aid
There are many ways to identify when a physical change has occurred. This can be done by recognizing reversible changes or eliminating chemical changes.
Physical changes involve state changes in matter and energy. These changes cause the matter to change form, but no new material is generated. Matter may alter in size, shape and color. When substances are combined but do not chemically react, physical changes take place.
A physical change can be recognized if it is reversible, especially if it involves a phase transition. For instance, if water is frozen into an ice cube, it can be melted back into water.
Sometimes eliminating the potential of a chemical transformation makes it easier to spot a physical change. There may be a number of signs that a chemical reaction has taken place.
To read more about chemical change see:
brainly.com/question/1222323
#SPJ1
Full question: How to identify physical change?
Hello There! ^_^
Your question: The most important measure of the size of a river is the..?
Your answer: <span>The most important measure of the size of a river is the volume of its discharge.
</span>
The answer is option D.
Happy Studying!
