|
From Wiktionary under the GNU Free Documentation License. In botany, a leaf is an above-ground plant organ specialized for photosynthesis. For this purpose, a leaf is typically flat (laminar) and thin. As an evolutionary trait, the flatness of leaves works to expose the chloroplasts to more light and to increase the absorption of carbon dioxide at the expense of water loss. In the Devonian period, when carbon dioxide concentration was at several times its present value, plants did not have leaves or flat stems. Many bryophytes have flat, photosynthetic organs, but these are not true leaves. Neither are the microphylls of lycophytes. The leaves of ferns, gymnosperms, and angiosperms are variously referred to as macrophyll, megaphylls, or euphylls. Leaves are also the sites in most plants where transpiration and guttation take place. Leaves can store food and water, and are modified in some plants for other purposes. The comparable structures of ferns are correctly referred to as fronds. Furthermore, leaves are prominent in the human diet as leaf vegetables. From Wikipedia under the
GNU Free Documentation License How should I point a leaf blower to propel a hovercraft? Q. I have built a hovercraft for the science fair. I am using a leaf blower to get lift and another one to propel and steer it. I am wondering how I should position the leaf blower on the back of the hovercraft. Should it be level, to the sky, or towards the ground for the best speed. You can also suggest other ways that i could propel and steer the hovercraft. Asked by stjdarylthomas - Thu Feb 21 12:37:50 2008 - - 4 Answers - 0 Comments A. you should place it on the back , but you will have to create pipes and vents at least one at each corner to create lift you will also have to make the pipes in the front and back different widths to help create a better force of air where needed, Answered by zampa_cotj - Thu Feb 21 12:47:53 2008 How do i apply gold leaf to my wall? Q. If i paint large pok-a-dots onto my wall would it be easy or even possible to glue gold leaf into those pok-a-dots to have gold pokadots on my wall? and how do i do this? Is there an easy way? or will glue and gold leaf just not cut it? Thanks for the tips! Another question: How should i hang a reeeally heavy mirror up without a drill? Asked by Shhhh - Mon Jan 14 16:58:03 2008 - - 3 Answers - 0 Comments A. Here's a step-by-step guide to gold leafing that they did in an HGTV makeover: Answered by yowza - Tue Jan 15 17:20:22 2008 How long does it take for African violet leaf to grow roots?
Q. I recently got African Violet for my office, and I cut one leaf out and put it in warm water. How long will it take to grow roots? (I'm in Los Angeles, CA and the sun is pretty warn these days. day time temperature is about 77 degrees) Asked by nostalgia80 - Fri Mar 23 15:12:07 2007 - - 1 Answers - 0 Comments A. You should see little roots in a couple of weeks. I have even cut a leaf with stem attached and planted it in dirt and in about a month or so you will see new growth. Once I got started doing this I ended up with so many new plants I had to start giving them away. Good Luck Answered by Ruthie - Fri Mar 23 15:39:35 2007 From Yahoo Answer Search: "leaf"  onlineathens.com Mon, 26 Jul 2010 04:21:15 GMT+00:00 -limb pickup set for 8 neighborhoods Online Athens Pickup times are 8 am to 4 pm Monday through Friday. People may have one "load" per pickup, which constitutes 25 paper lawn refuse bags or one 3/4-ton ...  smith.edu Mon, 26 Jul 2010 19:33:12 GMT+00:00 Smith College Grecourt Gate When Bellemare began the investigation in 2008, he sought and received approval to temporarily transplant the Umbrella Leaf to areas within state forests in ...  theleafchronicle.com Mon, 26 Jul 2010 17:11:43 GMT+00:00 Clarksville Leaf Chronicle Austin Peay senior running back/return specialist Terrence Holt was named the 2010 Ohio Valley ... Govs ready for OVC football media day Clarksville Leaf Chronicle From Google News Search: "leaf"  biol.andrews.edu 480px x 640px | 68.40kB [source page] branches The leaves are 10 inches long pinnately compound with 11 three inch ovate leaflets The leaves have major and minor alternating veins The stem of the leaf is fuzzy While walking through the Hardwood Hammock and observing the Gumbo LimboOs we came across a group who had a found a Cuban Tree frog in a  aphotoflora.com 480px x 640px | 45.00kB [source page] Pink Purslane Alien Weed white form leaf small plant Plym Bridge South Plymouth Devon 16 05 04 Public Location SX 518 581  aphotoflora.com 480px x 640px | 61.80kB [source page] Field Scabious Gypsy Rose leaf Hedgerow Forder Valley Road Plymouth 02 07 04 Public Location SX 507 580 Kniphofia sp Red Hot Poker see From Yahoo Image Search: "leaf"  wheels.blogs.nytimes.com By JIM MOTAVALLI Wed, 21 Jul 2010 14:12:21 GM Nissan recently sent out a battery warranty survey to people with . Leaf. reservations and those who have expressed interest in the car.  froyogirl.blogspot.com Lolia S Sun, 25 Jul 2010 02:27:00 GM Orange Tree Frozen Yogurt has been rebranded as Orange . Leaf. . Once virtually indistinguishable from Tutti Frutti and Yogofina, Orange Tree, oops, I mean Orange . Leaf. , now aspires to be Yogurtland. Here's the evidence that Orange . Leaf. is a ...  scienceline.org Molika Ashford Fri, 19 Sep 2008 05:17:14 GM Fresh Kills Landfill Turns a New . Leaf. . The world's largest landfill is slated to become the biggest park in New York City. A view of the city from the landfill's north mound. [CREDIT: molika ashford] ... From Google Blog Search: "leaf" |
