Answer:
DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.
Your answer would be D, because these are all relating to how the actions of the scientists will affect the environment and/or organisms.
Answer:
1. it's the cell membrane or just the cell itself
2. it's eukaryotic, I can tell because it's dividing
3. eukarya
Cations are positive so they have less electrons than protons, while anions are negative so they have more electrons.
