1 Chlorophyll: the pigment that gives plants their green color and allows them to absorb sunlight...  Chloroplast: a part of a cell found in plants that converts light energy into energy plants can use (sugar). Other living organisms such as algae also have cells that contain chloroplasts.
While the average cost to build a deck averages between $4,000 and $10,000, that doesn't account for the materials. Here is the average cost of each decking material, broken down by average price range per board: It's important to know what board sizes you'll need to purchase for your deck.
Second-story decks offer a bird's-eye view. Building a deck can be a relatively simple project for handy homeowners, but constructing a second-story deck takes a bit of extra skill. Plan to spend between $45 and $50 per square foot as of 2014 for a deck installed 8 to 9 feet above the ground, according to Decks R Us. Due to the complexity and danger of building a raised deck, this project is best left to the pros, and not well-suited to weekend warriors.