The nitrogen cycle could not exist without bacteria. Bacteria that lived inside the ground, catch the ntirogen that has been fixed and convert it into nitrate. This nitrate than used as a nutrients during photosynthesis from which the plants produce another fixed nitrogen and completed the cycle.
A unique feature of diatom cells is that they are enclosed within a cell wall made of silica<span> (hydrated silicon dioxide) called a </span><span>frustule.</span>
Answer:
the bottom left one is the one
The chromosomal defect is caused when I part of a chromosome breaks off at either end attaches to another chromosome is called Translocation.
The answer is A. By gemmules
