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Why do trees need leaves? | Reference.com


Trees need leaves primarily because of photosynthesis and respiration. Photosynthesis is the process by which carbon dioxide is converted into nutrients that ...

Why Plants have Leaves - Elementary Science Program


Leaves do this by using sunlight for energy to take apart water from the ... Water gets to the leaf through a set of pipes inside the tree which goes all the way ...

The Terrific Trees - US Forest Service


All trees need at least four things to live: sunlight, water, soil and air. The tree leaves have a special chemical called chlorophyll that can turn the sunlight into a  ...

Why trees shed their leaves in the fall | Earth | EarthSky


Oct 14, 2015 ... Most deciduous trees have broad leaves that are susceptible to being damaged during cold or dry ... Why do tree leaves turn red in fall?

Why do trees lose leaves during winter? If leaves are responsible for ...


The other answers here are great, but I have two minor points to add in addition to the excellent points offered by others: In places where the ground freezes in ...

How and why do leaves fall off trees? - Science Questions ...


Trees that drop their leaves seal the spots where the leaves are attached. Then fluids cannot flow ... The falling of the leaves does more than mark the season. It also helps the ... Is your heart burning when you have heartburn?Share-It Science.

What makes leaves sprout in the spring? - Phys.org


May 17, 2011 ... So in late August and early September in the northern hemisphere, when precipitation rates drop, that can function as a cue and have the tree ...

Do leaves on trees make oxygen? If they do during the winter when ...


Nov 12, 2013 ... If they do during the winter when the leaves fall off the trees is there less ... Yes, leaves on trees produce oxygen through photosynthesis.

Tree Facts - NC State University


Most will however lose some of their oldest leaves just before they produce new ... We do not have a national tree, however, there is a campaign to have the oak ...

BBC Bitesize - KS2 Science - Why do plants have leaves?


Oct 8, 2007 ... We see the result of an experiment in which the leaves of a plant have been removed. What happens when the leaves of a tree get infected with ...

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Learn About Leaves - Home Science Tools


To do that, the chlorophyll in the leaves starts to break down and the food that the leaves have been making is stored inside the tree instead of in the leaves.

Why Do Trees Have Leaves? | eHow


The primary reason why trees have leaves is to produce photosynthesis. This is the process by which leaves collect energy from the sun and use it to ...

Deciduous vs. Coniferous | The Roaming Naturalist


Nov 3, 2010 ... Have you ever wondered why some trees have leaves while others have ... And of course, as can only be expected - there are exceptions to all ...