Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Question: What group of elements cannot conduct electricity? Answer: nonmetals
Nonmetals are elements that generally cannot conduct electricity. They are the second largest class of elements after metals. Examples of nonmetals include hydrogen, carbon, chlorine, and helium.

Question: What effect causes winds and currents to form circular patterns? Answer: coriolis effect
The Coriolis effect causes winds and currents to form circular patterns. The direction that they spin depends on the hemisphere that they are in.

Question: What holds together the small molecules called nucleotides which make up nucleic acids? Answer: covalent bonds
Nucleic acids consist of chains of small molecules called nucleotides, which are held together by covalent bonds.