4. Vegetative propagation by leaves occurs in plants like 5. Vegetative propagation carried out by human beings to grow plants is called propagation,
6.Asparagus and Chrysanthemum can be propagated by
7.is the second whorl and consists of brightly coloured
8.produce hundreds of very small structures called pollen grains.
9. Animals that give birth to their young ones are called animals,
10. The opens into a muscular tube called vagina,​

nucleus

would be most reasonable answer tbh

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.