Dna replication result in two dna molecules that are (new or original)

2 New DNA molecules that are genetically identical to parental DNA molecule. (not sure what u mean by original vs new. If u are talking about new DNA molecules, after DNA replication, 2 new DNA molecules are formed. However, if you are asking about DNA nucleotide sequence in the genome, after DNA replication, 2 genetically identical molecules of DNA are formed.)

Explanation:

Semi-conservative DNA replication occurs whereby original double stranded parental DNA molecule separates and act as templates for the synthesis if new daughter strands. Resulting in the newly synthesised DNA to be made up of a parental strand and a daughter strand each.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.

the answer to your question is b