Answer:
the second option is correct
Explanation:
maybe I think b is correct
I think <span>500 m but i just think i dont know </span>
Answer:
Both are similar concepts.
Sound is the vibration of air particles (compression and expansion) the can reach your ears. But you can have vibration being propagated in liquids and solids as well.
Some sounds are generated in structures, so the vibration of a structure is converted to sound in air — for instance, a loudspeaker.
Explanation:
Dihydrogen oxide is the right answer. Dihydrogen oxide is just 2 hydrogen and 1 oxygen which is H2O or water.
Cadium
Down a period, atomic radii decrease from left to right due to the increase in the number of protons and electrons across a period.
