16. A primitive meteorite is one that a) was found a long time ago b) fell a lon

Question

16. A primitive meteorite is one that a) was found a long time ago b) fell a long time ago but found only recently c) contains mostly iron Ad) left the asteroid belt a long time ago e) was derived from an undifferentiated asteroid 17. A fossil group called an Index Fossil is one which. a) has limited geographic distribution, but a long time range b) has a large geographic distribution, but a short time range e tells us a lot about the geographic environment where and when the organism lived was especially useful for determining the break-up of Pangaea ej especially tells us about past ice-ages 18. The most common way of obtaining the 'absolute' age of a fossil is: a) by direct radiometric dating of the fossil remains b) by direct radiometric dating of the stratum in which it was found c) by estimating how long it would take for evolution to have produced the organism that left the fossil bracketing the age of the stratum containing the fossil d

Explanation / Answer

16 b it touches the earth's surface very long time ago and found recently

17. B index fossil has large geographical distribution and small time range so that it tells about piculear time range with wide range of spatial distribution

18. D the age of fossils can be obtained in many ways some direct or some are indirect way it depends upon the type of fossils and from which ecological environment it is obtained but here the best way to obtain absolute age of fossils direct radiometric dating of fossils remain or of the stratum in which it was found

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