The answer is Habitat. I'm 100% sure it is.
DNA Helix, DNA Supercoils, Nucleosome, Chromosome
Small < Large
The answer is Permian-Triassic extinction.
The Permian-Triassic extinction was 252 million years ago. It is known as The Great Dying because about 95% of all species died out due to environmental changes (volcanic eruptions, dry climate, melting of ice sheets, etc). This is also the only event in which many insect species wiped out.

⭐The temperature of groundwater near a volcano <u>Increase</u>
⭐The amount of gases released from a volcano<u> </u><u>Increase</u>
⭐The strength of earthquakes close to the volcano <u>Increases</u><u>.</u>
⭐The shape of the volcano <u>Increases</u>