Drag is another one i actually did this project in 5th grade so i know some of this hope this helps.
You would try to study the nucleus and the organelles of the organism to classify it
Covalent Bonds: A Hydrogen Example. A covalent bond is a chemical bond that comes from the sharing of one or more electron pairs between two atoms. Hydrogen is an example of an extremely simple covalent compound. A hydrogen example.
Answer:
nucleus is the answer your welcome