Because all organisms are made up of cells and there are different types of cells which carry different functions.
Well there would no longer need plants to make air or take Carbon Dioxide, and the Carbon Dioxide would me our main meal
There are concerns over the inadvertent effects, such as the creation of food that can cause an allergic reaction, GMO that can cause harmful genetic effects, and genes moving from one species to another that is not genetically engineered.
The steps or rungs of the DNA molecule are composed of respective nitrogenous bases, complementary base pairing by forming respective hydrogen bonds with other nitrogenous bases of the other nucleotides that make up the second polynucleotide strand of DNA. The sides of the DNA molecule are composed of sugar and phosphate making up the sugar phosphate backbone.
