A piece of wood is know to be 34,320 years old. At the present time, the wood contains 4.0 g of radiocarbon. How much carbon-14 was in the wood originally? The half-life of carbon-14 is 5,720 y.

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

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.

What is the correct equation for cellular respiration?