Which two atoms form a covalent bond? a. a sodium and chlorine atom b. two sodium atoms c. two oxygen atoms d. an iron and oxygen atom

How did the miller-urey experiment impact the way scientists think about the origins of life? use what you know about the miller-urey experiments to discuss the factors needed for life to arise, and speculate on whether life could arise on another planet.

How can active reading strategies you? o a. they can you get into better physical shape. o b. they can you read fewer science articles. o c. they can you understand what you read. o d. they can you avoid reading altogether.

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?