What is an organism's niche? a. the physical environment of the organism b. the role that an organism plays in c. the environment the traits that increase an organism's survival o d. the competitors and predators of the organism

B. A niche is a better word for job so basically the role that they have

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.