Answer and Explanation: So the plant/algae take nitrogen from the topsoil by captivating through roots, such as the Glutaminic Acids, ammonium ions, or nitrate ions. Plants can't necessarily get nitrogen from instant air, however, plants obtain nitrogen through a natural process.
Hope this helps! :-)
The percentage of alleles for homozygous recessive would be 50%
Organisms on earth live in the Biosphere
Sorry i need pointsss the answer is nasal passages yeah