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:
2.
...................... may be adapted to new functions during the course of evolution.
4.
Changes in the non-reproductive tissues caused by environmental factors are not...................
5.
............. is determined by different factors in various species
Down:
1.
Evolutionary relationships are traced in the .................of organisms
3.
Variations in the species may confer survival advantages or merely contribute to the.................
OK