The answer is C. the carbon symbol C with one dot on each
the top, bottom, left, and right sides
Jets streams play a key role in determining the weather because they usually separate colder air and warmer air.
Answer:
30 feet /second
Explanation:
60 feet/ 2 sec = 30 feet/sec
Answer:
put a test tube over the opening, remove it and quickly put a lit splint near the mout or in the tube. if you hear a squeaky pop it is hydrogen.
Explanation:
hydrogen ignites in air.
Convection: the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
hope that helps :)
