Print the PDF. Fold each page down the middle along the dotted vertical line and cut the solid horizontal lines.
If your printer has a special "duplex" option, you can use it to automatically print double-sided. However for most printers, you need to:
If your printer prints pages face up, you may need to tell your printer to reverse the order when printing the even-numbered pages.
Why? In order to provide a consistent printing experience across different computers and web browsers, we've provided a standard PDF format for you to print.
GACS lclab Honors Biology - Chapter 3 - Communities, Biomes, and Ecosystems - Section 3.3 - Aquatic Ecosystems
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