Fossils can be used to match up rock layers. As organisms change over time, they look different. Older fossils will look different than younger fossils. Some organisms only survived for a short time before going extinct. Knowing what organisms looked like at certain times also helps date rock layers. Some fossils are better than others for this use. The fossils that are very distinct at certain times of Earths history are called index fossils. Index fossils are commonly used to match rock layers. You can see how this works in Figure 2.30. If two rock layers have the same index fossils, then they're probably about the same age.

How are fossils used to match up rock layers?

Billy and Sally are brother and sister. Billy is seven and Sally is eight. Their mother, Deborah, likes to have Billy and Sally dress up in costumes and play a game where they are answering the telephone. Usually when they play the game, Billy answers the telephone in a loud voice, and Sally answers the telephone in a quiet voice. On Tuesdays, Billy answers in a quiet voice, and Sally answers in a loud voice. On Fridays, Billy answers in a loud voice and Sally in a quiet voice. Billy has blonde hair. Sally has brown hair. Deborah has blonde hair, and Billy and Sally's father, Bob, has brown hair. He tells them to eat lettuce every time that he sees them, so that they grow big and strong like he is. Deborah likes to add some sugar with the lettuce so that Billy and Sally know what it is like to have sweet tastes in their life. One day, a Wednesday, Billy throws some lettuce into Sally's hair. Deborah laughs an grabs some straw from their farm and puts it in Billy's hair. Billy and Sally live on a farm. They have a goat, named Joey, and a duck, named Quack. They sometimes play a game with the goat where they chase him around the farm. Other times, they play a game with Quack where they wave at Quack and laugh. They have a fun life growing up on the farm.

What game do Billy and Sally play with their goat?

Ace , a wannabe rock star , is on his way to a concert of the band Guitar Wolf when space aliens invade the Earth . As a result the dead rise to their feet in the countryside setting of Asahi , Japan , with an appetite for flesh . Enlisting the help of his rock 'n roll blood brother Guitar Wolf , Ace and the members of the band get entangled in many misadventures with crazy rock managers in very tight shorts , transsexuals , naked women shooting guns in the shower , and bloodthirsty zombies ready to tear them apart . Leather jackets , loud over-modulated music , laser guitar picks , motorcycles , guns , muscle cars , and fire abound . Guitar Wolf , a Japanese trio signed to Matador Records in the US and self-proclaimed coolest rock band in the world star as the well-coiffed heroes . It is also a love story , between Ace and Tobio , a trans woman . The music , in a garage punk vein , plays an important role in the film . It features music from Greg Cartwright of Reigning Sound and The Oblivians . His 1997 song '' Twice as Deep '' by Greg Oblivian & the Tip Tops is featured . This film is similar to another movie by a Spanish punk group , La matanza can bal de los garrulos lis rgicos produced by Siniestro Total
Who played the music in '' Twice as Deep ''?