Mr. R. plans to do an experiment with all three science classes which requires 6 test tubes for each team of 2 students. How many test tubes will Mr. R. need if each class has 20 students?

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

if you mean hydrogen and oxygen then water is the product

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

explanation:

0.07 g/cm³

1.37 g/cm³