Please help!

What are the exchange pools for Carbon?

Carbon pool

Earth's carbon pools.

The ocean (~37,000 GtC).

Terrestrial ecosystems (~3,000 GtC).

Earth's crust (sedimentary rocks ~75,000,000 GtC).

The atmosphere (~830 GtC).

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

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.