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NoteBook Voc.

Emony Smith

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Across
5.is an animal that lives part of its life on land and part of its life in water
6.is an animal with a backbone
9.a fossil must be widely distributed and represent a type of organism that existed only briefly
11.the magma cools and hardens into a mass of igneous rock
13.is a record of the life forms and geologic events in Earth history.
15.an extremely thin coating of carbonon rock
18.continents move very slowly over earth's because of force inside earth.
19.geologists divide the time between Precambrain Time and the present into three long units of time
20.is the type of rock that is made of hardened sediment
22.the surface where new rock layer meet a much older rock surface beneath them
24.is the gradual change in living things over long periods of time
26.a rock is the number of years since the rock formed
28.eras are subdivided into units of geologic time
29.is its compared to the ages of other rocks
30.if it no longer exists and will never again live on earth.
Down
1.to determine the relative ages of sedimentary rocks layers
2.have scaly skin and lay eggs with tough, leathery shell
3.is a warm-blooded vertebrate that feeds its young milk
4.are fossil in which minerals replace all or part of an organism
7.is a well-tested concept that explain a wide range of observations
8.is a hallow area in sediment in the shape of an organism or part of an organism
10.without a backbone
12.in which man types of living things became extint at the same time
14.is a soild copy of the shape of an organim
16.provide evidence of the activties of ancient organisms.
17.use fossils to build up picture of earth's past environments
21.lava that hardens on surface
23.are the preserved remain or traces of living things
25.is a break in Earth's crust
27.is a ball of dust and ice thats orbits the sun

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