Probably the @, which is called the "at sign" by most.
Good luck!
-RxL
<span>The answer is two. It
was started in the 1970s where the Chinese government enacted. This was due to the continuation of the
Cultural Revolution and the pressure it put the nation through. Though there
have been reports in 2015 that the government may have made changes in these
laws due to the aging problem in China. The new laws were approved in session on
December 27, 2015 and became effective on January 1, 2016.</span>
Hello there!
For completing the table, you'll need this information:
REGIONS: Africa-North, Central and South America-Some parts of Asia. SITUATED IN: Areas with low population. OPERATED BY: Landowners and Foremen. WORKERS: From Slave Colonies. Only roof & food were given to them. TYPES OF CROPS: Crops grown for profit (Cotton, Sugar, Tea...) DEFINITION: Big Land Extensions dedicated to the mass-scale production of a certain kind of plant.
Have a nice day!
Answer:
Statement that is true about electromagnetic and mechanical waves is:
Option B: Mechanical waves must travel through a medium, but electromagnetic waves do not require a medium to travel.
Explanation:
'Electromagnetic' waves do not need any medium to travel whereas 'mechanical waves' need a medium or matter for transmission. Electromagnetic waves are produced by the 'vibrations' of the charged particles. They can even travel in vacuum.
On the contrary, mechanical waves are caused by the 'wave amplitude'. Mechanical wave can travel in solid, liquid and gas and are considered to be periodic disturbance.
Thus, Option B is the most statement apt explaining the difference between electromagnetic and mechanical waves.