crossword
Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Check
Across:
3.
Evolution is simply the .....................of diversity and the shaping of the diversity by environmental selection
4.
Speciation may take place when variation is combined with geographical ................
5.
. All such preserved traces of living organisms are called..............
Down:
1.
Evolutionary ................... are traced in the classification of organisms
2.
, feathers are thought to have been initially evolved for warmth and
later adapted for ................
OK