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Evolution And Genetics Crossword Puzzle
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Evolution and Genetics

All phrases have spaces

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Across Down
2 How do we know about life on earth before there were humans
3 When abiotic parts of earth and biotic organisms are always changing
4 The way an organism looks
5 The oldest living organisms
7 When the environment selects the gene combinations that best fit the resources available to the organism
8 Errors in DNA replication
10 What must every living thing do to pass on there genes
13 Have no apparent functions but they resemble structures their presumed ancestors had
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1 Structures that have a common ancestor but do not preform the same function
6 Life changes constantly by mixing _____
9 The earth evolves by ______
11 The biggest grouping of organisms is at the _________ level
12 The youngest living organisms are the______
14 The smallest level of life
15 All living things are _________
16 All living things are made of _____
17 How many kingdoms of life are there
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Answer
 
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