Air that has been removed from a bell jar will NOT allow waves to travel through the jar. Question 4 options: sound light water

What filament and tubules give a cell its shape

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world