What is the proper way to smell a substance in a lab?

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?

Ascientist wanted to formulate a pill to attack a specific type of bacteria that infects the throat. which biological component would be best to use as a model for the pill's function? bacteriocytes phagocytes complement antibodies