It takes to much energy and there's a lot of dirt
Explanation:
Nitrates and ammonia resulting from nitrogen fixation are assimilated into the specific tissue compounds of algae and higher plants. Animals then ingest these algae and plants, converting them into their own body compounds. ... The action of these bacteria tends to deplete soil nitrates, forming free atmospheric nitrogen.
which is more likely to be the cause of down syndrome the egg or the sperm?
The egg
The building blocks are amino acids