Not all of the light from the Sun makes it to the surface of the Earth.
Even the light that does make it here is reflected and spread out.
The little light that does make it here is enough for the plants of the world to survive and go through the process of photosynthesis.
Light is actually energy, electromagnetic energy to be exact.
Flash is a plug-in that allows for increased interactivity.
If you can see the animated boxes at left, the plugin is already installed.When that energy gets to a green plant, all sorts of reactions can take place to store energy in the form of sugar molecules.Remember we said that not all the energy from the Sun makes it to plants?Semiparasitic plants can do photosynthesis and therefore do use carbon dioxide. They do use carbon dioxide during photosynthesis, but they are happiest if they can supplement a few nutrients by eating an occasional animal. Even nowadays not everyone quite agrees on what the definition of a plant is.But they also have to take some of their nutrients from an autotrophic host plant. If you do much research you might be surprised to find there are a few different definitions of plants floating around.Photosynthesis in plants and a few bacteria is responsible for feeding nearly all life on Earth.It does this by taking energy from the sun and converting it into a storable form, usually glucose, which plants use for their own life processes.If that is the definition of a plant then the answer to your question is easy.Because plants that have chlorophyll and do photosynthesis are also plants that use carbon dioxide. Even in the newer 5 kingdom classification system there are still some living things that are classified as plants by most biologists (we think most - let us know what you think) that are not capable of photosynthesis.Green plants, like those shown above and below, are autotrophic. Galapagos' beautiful and elegant answer about Dolphins and Whales? Change sometimes brings a little confusion and disagreement, even amongst the experts.Autotrophic plants can make all their food and energy needs from solar energy and just a few inorganic materials - carbon dioxide, water, and some minerals. These guys really do eat little insects and other small animals. Fungus and algae, for example, are no longer considered plants, as they were when I was a kid.