Explain why autotroph‘s are also known as producers

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.

Need , i need a scenario of: artificial selectionmutationnon random mating