The right answer is B.
Nitrogen fixation is done by decomposers that are prokaryotes (bacteria).
<u>Take the example of legumes.
</u>
The different species of rhizobia bacteria, which are able to infect the roots of legumes (Fabaceae family), are specific to certain host plants. Rhizobium phaseoli infects beans (Phaseolus sp).
Bacteria cause the formation of nodules on the roots by penetrating the root hairs, and transform into larger "bacteroids". The nodules are the seat of a symbiotic activity in which the plant provides the sugars and energy from photosynthesis, and in return benefits from the amino acids that are produced there.
Model organisms is your answer
Hope this helps : )
The Calvin cycle of photosynthesis begins when the carbon dioxide is
attached to RuBP (A). The Calvin cycle refers to the light-independent
reactions in photosynthesis. The Calvin cycle occurs in three steps.The
Calvin cycle is indirectly dependent on the light since the energy
carriers, for example, ATP, are products of light-dependent reactions.
The second step is that the CO2 is fixed from an inorganic molecule to
an organic molecule. In the third and final stage, RuBP is regenerated.
This enables the system to prepare for more CO2 to be fixed.
The area of land<span> that is drained by a particular </span>river<span> and its tributaries is </span>called <span>either a </span>river<span> basin or </span>drainage<span> basin. </span>
The answer is C. the coldest place on Earth. mesospher the layer in which most meteors burn up after entering Earth's atmosphere and before reaching Earth's surface