Can somone do the idea prinicipal of this? The interior of Neptune contains a small, dense nucleus composed of iron, nickel and silicates, surrounding a mantle of water, ammonia and methane. The outer layer contains hydrogen, helium and methane. Neptune's atmospheric activity is high, with winds reaching 2000 km

(sorry for my english)

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

The biosphere of the earth is made up of what compound? organic or inorganic?

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?