Which statement best describes scientific theories? select one: a. scientific theories are what laws are called before they are proven. b. scientific theories attempt to explain why natural events occur. c. scientific theories are based on opinions. d. scientific theories describe natural events.

How can one distinguish breccia from conglomerate? a. breccia contains angular clasts and conglomerate contains rounded clasts. b. breccia contains rounded clasts and conglomerate contains angular clasts. c. different minerals cement breccia than cement conglomerate. d. breccia contains sand and conglomerate contains silt.

When does your body conduct current more readily?

In a good thermo flask the main cause of heat loss is