Relative Dating Using Index Fossils Index fossils can help geologists compare rock at locations .
• First, geologists give a relative age to a layer at one location.
• Index fossils help identify where may have occurred.
• Then that layer can be to other locations.

The answer choices is layers, distance, compared, unconformities

Which is true of the reactants in this displacement reaction? fe + 2hcl fecl2 + h2 a. the reactants are located to the left of the arrow in the chemical equation. b. the reactants contain 1 iron atom, 2 hydrogen atoms, and 1 chlorine atom. c. the reactants are the atoms, molecules, or compounds formed in the reaction. d. the reactants have the same physical and chemical properties as the products.

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Particles vibrate in a rigid structure and do not move relative to their neighbors.