A fossil is... , the ruins of an ancient city, a landform that is very old, evidence that organisms are endangered, a trace or the remains of a living thing that died long ago, Fossils can be... , rock, dirt, and wood, shells, bones, skin, leaves, footprints, tar, ice, and tree sap, Trace fossils... , show a whole organism, show only the soft tissue of an organism, show the activities of an organism, show what year an organism was born, What shows the activities of an organism?, cast, mold, amber, trace fossils, Which is not a trace fossil?, footprint in mud that hardened into rock, an animal's burrow or nest, ancient tree sap called amber, Why are trace fossils helpful? , They help scientists learn about an organism's behavior., They help scientists tell the age of the fossil. , They tell where an organism was born. , Preserved remains are... , footprints left behind, when only the soft tissue remains, the physical remains of an organism, molds left behind by organisms, What is amber?, ancient tree sap, petrified wood, hardened mud, rock and sediment, How are amber fossils formed? , when soft tissues decays, when organisms are frozen in ice, when trees fall on organisms, when insects become trapped in tree sap, Preserved remains can be found in all of the following except... , ice, amber, tar, mud, Molds and casts show the _____ or outline of an organism without containing any physical material from the organism. , imprint, soft tissue, hard tissue, remains, A seashell makes an imprint in the sand. Slowly the shell breaks down and the material hardens into _____. , rock, mud, sand, bone, , mold, cast, amber, trace fossil, , mold, cast, amber, trace fossil, , mold, cast, amber, trace fossil, , mold, cast, amber, trace fossil, Fossils in stone exist when sediment buries an organism and _____ decays leaving hard bone behind., soft tissue, bones, sediment, mud.

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