Sunlight is very important. Most of the energy that use is from the sun (either directly or indirectly). Fossil fuels was the change from living material to fuel, and those living material would have had the energy when they were alive and eating plants (which takes the energy from the sun through photosynthesis). … Read more

There are mainly two types of plate tectonics. There is destructive where part of a plate goes under ground and becomes apart of the magma, and the other is constructive where both plates aren't destroyed, there maybe creation of the plates or rubbing against each other. The destructive plate margin deposits some sea water and … Read more

Carbon, Nitrogen, Oxygen and Hydrogen. All of them are in fact quite important, Carbon is for respiration, without it there would be very little amounts of energy. Oxygen would be needed for respiration so that there would be an aerobic respiration, creating more energy. Hydrogen is used for generating the ATP (energy). Nitrogen is used … Read more

Since it is a metal, it should be able to conduct electricity. However, lithium reacts with the air very quickly, creating an oxide. The oxides do not conduct electricity, so overall, I guess it won't be the best element to use for conducting electricity.

Silicon oxide is more commonly known as sand

Barium sulphate would appear as a white precipitate

The RMM of Sodium is 22.99 grams / mole. The equation to make mass into moles is: Mass / RMM = moles. So there would be 17.5/22.99 moles of Sodium = 7.61 moles