The part of the cytoskeleton made from the protein actin is called a

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.

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.