I cant remember what they were called, but I can tell you that they originated in Africa. Use that to research I have no doubt you will find it ;)
Answer:
i believe it is b but the answer can also be d , its hard to tell because its a picture of a screen..
By mid point equation, x = 2, y = 0.5, the answer is 0.5
Answer:
Maybe cultural. I am not sure though
The ozone layer is contained within the stratosphere. The stratosphere is the atmospheric layer between the trophosphere and the mesosphere. The stratosphere bridges both cooler and warmer temperatures, which is a direct result of the UV radiation absorbed by the ozone layer, which is mainly found in the lower part of the stratosphere.
