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:
1.
epithelium lining the intestine
3.
chemical substance with waterproof quality
4.
pores on the leaves
Down:
1.
epithelium lining kidney tubules
2.
nervous system is made up of
OK