Why do you think insects are important to the balance of nature? How do humans depend on them?

They do lots of things like keep waist down and some bugs keep other invasive species of bugs down

the core of the sun is so hot and there is so much pressure, nuclear fusion takes place, hydrogen is changed to helium. nuclear fusion creates heat and photons. when the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.

the answer is b.) hydrogen bonds between bases.