Which of the following methods is least likely to help Alisha determine the age of sedimentary rock layers in her backyard? A. Apply radiometric dating to determine the amount of radioactive isotopes in each rock layer.

B. Identify index fossils in sedimentary rock that have lived in a particular time in Earth’s history.

C. Analyze seismic diagrams to determine how radioactive elements break down into stable elements.

D. Use relative dating techniques to determine how individual fossil groups are related to specific rock layers.

ILL GIVE BRAINLIEST!11

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12