kaleyymichelleee kaleyymichelleee

15-12-2016
Chemistry

contestada

Why are index fossils used to date other fossils in an area of rock

Respuesta :

Alejandro90 Alejandro90

15-12-2016

Index fossils can be used to help determine the relative age of rock layers. Index fossils are from species that only existed for a short time. Index fossils are found inrock layers. Trilobites and Graptolites are index fossils.

Answer Link

Otras preguntas

Graph the parabola. Y=1/4x^2

needing help with this please

techni__y compet_nttrave__ing expen_es paidexcell__nt libr_y facilit_s avail_ble

why can it be said that the battle of Antietam was a defeat for both sides?

4. Benzene, C6H6, and toluene, C6H5CH3, form ideal solutions. At 35°C the vapor pressure of benzene is 160. torr and that of toluene is 50.0 torr. In an experim

How many joules of heat are needed to melt 50 g of ice at 0°C and then warm the liquid to 65°C? heat of fusion of ice = 334 J/g specific heat of water = 4.184

Instruction The cultural background for the short story “Two Kinds” is a Chinese American community in California. According to the story, the narrator’s mother

What can be concluded about the long-term effects of Alexander Graham Bell’s invention? A It increased literacy rates by encouraging people to communicate throu

which of the following statements is true? a. the foil is always a villain b. the foil is always a character c. the foil is never the protagonist

who is the union commander and confederate commander on the battle of Chancellorsville