EXTRA CREDIT FROM REVELL eTEXT:  Each question can be answer…

EXTRA CREDIT FROM REVELL eTEXT:  Each question can be answered separately to earn points. (1) Why is the element mercury added to gold ores in the process of gold mining? (2)  What are the health effects of mercury poisoning? (3)  What problem(s) have caused the use of solar power to be used on the large scale to be such a slow process? (4)  What was the invention that helped solve the problem of storing solar energy? (5)  What element is involved in solar cells that takes advantage of atomic emissions to create an electric current?

EXTRA CREDIT FROM REVELL eTEXT:  Each question can be answer…

EXTRA CREDIT FROM REVELL eTEXT:  Each question can be answered separately to earn points. (1) Why is the element mercury added to gold ores in the process of gold mining? (2)  What are the health effects of mercury poisoning? (3)  What problem(s) have caused the use of solar power to be used on the large scale to be such a slow process? (4)  What was the invention that helped solve the problem of storing solar energy? (5)  What element is involved in solar cells that takes advantage of atomic emissions to create an electric current?