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11- What type of animal might become preserved in amber?..............
12- Where are the Rancho La Brea Tar Pits?.............................
13- What type of animal might become preserved in a tar pit?................
14- Which is most likely to fossilize: hard part or soft part?....................
15- Of all the organisms alive today, What percentage is most likely to be preserved as fossils?..................
16- What are three ways a fossil can be destroyed after it has formed?
17- Which type of rock most likely to contain fossils? Igneous, sedimentary or metamorphic?..............
18- Why is a mammoth more likely to fossilize than a caterpillar?
Explanation / Answer
Answer 11: Amber is a sap that a plant oozes out. This sap can drip down and cover insects like mosquitoes, grasshoppers and bugs along with pollen. As its harden, it forms a tough coating around the insect and hence the insect is preserved in its tough but see through coating.
Answer 12: The La Brea Tar Pits are tar pits of natural asphalt that have oozed out and covered parts of the Hancock Park in Los Angeles. This tar has oozed out for thousands of years and as it oozed, it trapped the animals and plants in the region. The most fascinating fossils thus preserved are full specimens of mammoths, sloths, bears and wolves.
Answer 13: In a tar pit, animals who were in the territory of the extruded pit can be trapped. There truly is no definite answer to this. These can include animals that were very close to the point of the tar extrusion as well as animals who would get caught in the tar later.
Answer 14: The hard part is most likely to fossilise. The soft parts will decompose by natural processes but the hard part – skeleton and exoskeleton, is what preserves the original shape of the organism long enough for the sedimentation and compaction to take place around the organism.
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