During a biology lab practical, students were required to identify a metal by its density. all the metals were painted green so students could not use color as a factor to eliminate choices. carl computed the density of his sample metal to be 8.9 g/cm3. since carl's lab grade depended on his accuracy and correct identification of the sample metal, he was unsure which sample he had, nickel or copper.

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

check for the pregnancy rating of drug. if its class c or d see if other alternatives

the electromagnetic energy from the sun arrives in the form of visible and invisible light.