Hot springs and geysers are heated geothermally using Earth's mantle as it's source.
Bacteria are required or needed in the nitrogen cycle because other living properties cannot use atmospheric nitrogen.
<h3>What is the nitrogen cycle?</h3>
The nitrogen cycle is the sequence of operations by which nitrogen and its mixtures are interconverted in the environment.
In living organisms, It considers nitrogen fixation and pollution.
As regards Nitrogen fixation is affected, just bacteria are competent to improve atmospheric nitrogen into structures usable by other living organisms.
In nitrogen fixation, the atomic nitrogen is converted into chemical forms functional by plants and convert atmospheric nitrogen into chemical forms functional by plants.
Therefore, option A is correct.
Learn more about the nitrogen cycle, refer to:
brainly.com/question/9243222
Surface, crust, mantle, and core
Answer:
See explanation
Explanation:
1. Super Nova
2. Apparent Magnitude
3. One Parsec
4. Cosmology
5. Pulsars
6. Neutron Stars
7. Quasars
8. Brown Dwarf
9. Nebula
10. Constellation
11. Dark Matter or Dark Energy (not sure which one because they are extremely similar and I’m no scientist)
12. Gravity
13. Stellar Evolution
14. Red Shift
PLEASE mark me brainliest I spent 25 minutes working on this for you please and thanks.
The correct answer is: C: two and a half years. As a mater of fact, it started in May 1804 and lasted until September 1806. This expedition, also called Corps of Discovery Expedition was the first American expedition to cross what is now the western portion of the United States. Expedition was ordered by president Thomas Jefferson shortly after the Louisiana Purchase in 1803. The goals were to <span>explore and map the newly acquired territory, find a practical route across the Western part of the continent, and establish an American presence in this territory.</span>
