The human eye is a convex lens. Explain how the lens in your eye re.
fracts light.

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?