I think it must be like this:
braille is a special system of writing and reading for blind people
Answer:
b. type of education one receives
The rich countries actually looks down on the poor countries. For example Africa ( continent) . They show the poor parts because they want Society to look down on them
Answer:
When a wave reaches the boundary between one medium another medium, a portion of the wave undergoes reflection and a portion of the wave undergoes transmission across the boundaryr:
Explanation:
When sound changes mediums (enters a different material) at an angle other that 90 degrees, it is bent from its original direction. This change in angle of direction is called refraction. Because of the angle, part of the wave enters the new medium first and changes speed
