Answer:
At different times
Explanation:
The echo returns at different times, but faster in water. This is because water particles are bound closer and this makes them transmit vibration energy from one particle to the next quickly. An echo is a sound wave and sound waves are longitudinal waves that occur by the collision of particles to move the vibrations along, and this is why they move slower in air.
I think the correct answer from the choices listed above is option D. La<span>w enforcement officers are mainly required to uphold the law. They are present in nations in order to implement rules and regulations and to control unwanted situations around. Hope this answers the question.</span>
Answer:
to maintain peace at home by preventing violent disturbances or rebellions
Explanation:
I got it right in the civics assessment
The answer is participant observer. A participant observer is classified as a method in which is used in collecting data for research. It is a method where a person joins a particular group in order to know or learn more about them in a way that they could join them or before the person could be accepted. The person usually records and observe as he or she joins the group to know more about the group that he or she is getting into.
Answer:
A.John Brown is the amswer
