Answer: A. Does the wave require a medium to travel.
Explanation:
Mechanical waves require the presence of a material object to be able to engage in energy transfer. For example, Sound is a mechanical wave that needs a medium to travel such as a solid or liquid.
Electromagnetic waves on the other hand, are able to travel through a Vacuum including that of space and they include all light waves. This is why the sun's light is capable of reaching Earth.
Answer:
Slower growth rate, longer life, lower fertility.
Explanation:
(Think you mean intelligence)
I think, intelligence is slightly more important than money. It's so because if you have intelligence, you can very well earn a lot of money. You can make use of your brains and find out smart ways of having more income. On the other hand, money can't fetch you brains.
The answer is b hope it help
Answer:
Karl Schwarzschild discovered black holes in 1916.
Hope this helps!!
