These are the nitrogenous bases in a nucleotide. There are four, which you mentioned in the problem: adenine, thymine, guanine, and cytosine.
The other two parts of a nucleotide make up he backbone: sugar, deoxyribose (DNA=DEOXYRIBOnucleic acid) and the phosphate group.
Hope this helps!!
~The images below will hopefully help. :)
*The pulley is a lever, and it helps lifts things higher with less force then trying to normally pick it up.
Answer:
Fatty Acid
Explanation:
Lipids are fats, so the only sensible answer is Fatty Acid.
1 They are heterotrophic
2 Chloroplast
3 A respiratory system in the lungs
Answer:
They become stronger due to the bones slowly growing together and forming newer longer bones
Explanation: