During mitosis, the? A) DNA molecules unwind.
B) Histones and DNA molecules separate.
C) DNA molecules become more tightly coiled.
D) Nucleosomes become more tightly coiled.

The speed of  sound:   sound travels  at different speeds depending on what it istraveling through. of the three mediums (gas, liquid, and solid)  sound waves travel the slowest through  gases, faster  through  liquids, and fastest  through  solids.

Idont see a question here

Carbon dioxide is the correct answer