Answer:
Nitrogen fixation
Explanation:
The nitrogen fixation is when the nitrogen from the air and from the ground are used to syntesize nitrate (NO2-) which is assimilated by the roots of plant and then transported to all of the plant.
The nitrogen is worth for plants because helps its growing and to synthesize chlorophyll.
For photosynthesis to occur, plants need sunlight, water, carbon dioxide and chlorophyll. Through the process of photosynthesis plants convert light energy into chemical energy. They use this energy to make food which they store as sugars.
HCI is not an example of a base. Hopes This Helps. :P
The answer to the question is A
If decomposers suddenly disappear from an ecosystem, then major cycle like nitrogen and carbon cycle will stop and no recycling of nutrients will occur.