How can your web page design communicate your personal value?

Which of the four major uses is predicted to change the least by 2020?

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

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13