Go to AP Central for resources for teachers, administrators, and coordinators. Learn about the fundamental concepts of chemistry including structure and states of matter, intermolecular forces, and reactions. Note: Save your lab notebooks and reports; colleges may ask to see them before granting you credit. Creating graphs, diagrams, and models that represent chemical phenomena. Explaining how the microscopic structure of a substance determines its chemical properties.
Although it is environmentally friendly, blue light can affect your sleep and potentially cause disease. Until the advent of artificial lighting, the sun was the major source of lighting, and people spent their evenings in relative darkness. Now, in much of the world, evenings are illuminated, and we take our easy access to all those lumens pretty much for granted. But we may be paying a price for basking in all that light. At night, light throws the body's biological clock—the circadian rhythm —out of whack.
Such pressure has led to at least one other company involved in the opioid lawsuit settlement discussions to reconsider its position. Drug distributor Cardinal Health Inc has said it will engage with shareholders to incorporate their views in its executive compensation plan after a minority of them revolted in November against a similar executive pay structure. A Cardinal Health spokesman did not respond to questions for details on any potential compensation changes. He declined to say how the Illinois fund would vote.