Why are bacteria a necessary part of the nitrogen cycle?
other living things cannot use atmospheric nitrogen.
other living things cannot use the nitrogen in plants.
bacteria are the main nitrogen reservoir.
bacteria are the main nitrogen transpirators.

The correct answer Other living things cannot use atmospheric nitrogen.

Atmospheric nitrogen is present in an inorganic form as N₂, which can not be utilized as such by living organisms like plants.

It must be converted into an organic form so that it can be utilized by plants. This is done by nitrogen fixing Bacteria like Nostoc.

Bacteria fix this atmospheric nitrogen into ammonia, which can be assembled into proteins that can be utilized by plants for its growth.

Thus, bacteria are the significant part of the nitrogen cycle.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'

fossil's are like over rated rocks like low key not gonna lie i don't get why we can't just call them old rocks like for real i mean i call my grandpa and grandma that smh