Which organelle is sometimes called the powerhouse of the cell a. nucleus b. mitocondria c. cytoplasm d. cell wall

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.

Match each symbol with its description.