Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Energy Flow in the Ecosystem
The principal source of energy for any ecosystem is sunlight. All food materials that we or other animals consume are manufactured directly or indirectly by plants. Think of your breakfast, bread is made of a cereal that is produced from plant material, egg from hen which has fed on plant products; and milk from cow which has consumed grass or fodder derived from plants. In a nutshell, the energy that we obtain from plants either by burning wood or by eating them, represents the solar energy trapped by the plants. We are dependent on the stored resources of solar energy. When we eat meat, we obtain energy that had been stored by plants several years before and then taken up by an animal like a goat through grazing. When we cut firewood for fuel, we obtain energy accumulated and stored by trees for perhaps a century or more. When we bum coal or petroleum, we obtain solar energy stored by plant life, millions of years ago. Now let us trace the energy flow through an ecosystem. This is represented diagramatically in Fig.
Notice that the energy from the producer to the last level has decreased considerably. The energy passed on to the next trophic level is represented by letter E of three different sizes, each by its size indicates the comparative amount of energy. The arrows in the upper half of the diagram indicate the loss of energy in the form of heat given out by different organisms. The arrows in the lower half show the energy loss via the wastes secreted and energy trapped in dead bodies of the organisms. Decomposers use these wastes and dead bodies as sources of food and derive energy from them. They also give out some unused heat energy. Energy flowing through an ecosystem is thus first captured by the producers. From the producers the energy passes to various consumers, via food. At the end of the chain we find that very little energy is left for the last trophic level, because some energy is always lost in going from one level to the next. This loss of energy limits the number of trophic levelsin the ecosystem, and so they are seldom more than five. This also clearly shows that why the steps in a food chain are limited to four or five.
How are babys produced
Explain the functions of Multicellular Organism Multicellular organisms are specialized quite similar to a team that does a lot of work efficiently as compared to a single pers
what would i need to do to achieve a 7C in science , KS3??
Optical specificity Some enzymes exhibit absolute optical specificity for at least a portion of the substrate molecule. For example, the enzyme maltase catalyzes the hydrolys
What is coal? The remains of trees and shrubs grew millions of years ago, when the weather was mild and moist.
Explain the Medulla Oblongata The medulla extends from the pons above and is continuous with the spinal cord below as can be seen in Figure. It is about 2.5 cm long shaped like
This assignment relates to working with an individual in a social care setting to plan, carry out and evaluate an activity which promotes the development of the individual. The can
Another way to observe the buoyancy of water Push a large cork to the bottom of a pail of water. Notice the quantity of force you have to apply to hold the cork at the bottom.
Transport: River Valley civilisations were characterised by settlements along the rivers and growth of cities which needed, among.other things, stones and wood from distant
LAB ANIMALS : In this section, we shall deal with the important aspects concerning lab animals. You are advised to be familiar with regulations concerning experiments on animals w
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd