10 1. Provide labels for parts 1 and 2 .
2. Identify the organelles 4, 5 and 9
3. Identify the layers 6, 8 and 10.
4. State the function of organelles labelled 4 and 5.
5. Is this a plant or animal celt?
6. List two observable reasons to support your answer.
7. Explain why early scientists did not have a detailed understanding
of the structure of the cell​

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

silty loam

hope this