When sound waves hit a solid surface they either reflect, refract, or absorb.
Echo's are caused by the reflection of sound waves.
Answer:
sun but am not so sure about it
<span>Cellulose is a polysaccharide and therefore a polymer, constructed from many monosaccharide glucose monomers.</span>
It is called Analogy. Practically equivalent to structures are those structures in various species which play out a similar capacity, have comparable appearance and structure yet are not developed together; along these lines don't share a typical precursor.
Cases of practically equivalent to structures run from wings in flying creatures like bats, feathered creatures, and creepy crawlies, to balances in creatures like penguins and fish. Plants and different living beings can likewise exhibit similar to structures, for example, sweet potatoes and potatoes, which have a similar capacity of sustenance stockpiling
To move from centimeters to meters you need to move the decimal forward two times
