Which is a physical property of aluminum?

a) aluminum rusts when it is exposed to moisture and air

b) aluminum is a good conductor of heat

c) aluminum reacts with oxygen to form aluminum oxide

d) aluminum reacts with hydrochloric acid to give off aluminum chloride and hydrogen gas

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

9. the history of life on earth is recorded in