Por onde o sapo caga?Me falaram que era pela boca.

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as