thanks for letting us know that......





food chain and food web are very differ,food chain is the linear feeding relationship between organisms in their environment,while food web is the complex feeding relationship between organisms in their environment.

<p><img alt="" src="https://data.ulearngo.com/assets/8e5682fd-7057-4bdb-8dce-5aa67a910d97" width="430"/></p>
<h3><strong>Who eats whom?</strong></h3>
<p>Describing the flow of <a data-lesson="biology-203-glossary-9" data-subject="biology" data-tutorial="cell-metabolism" href="https://app.ulearngo.com/biology/cell-metabolism/biology-203-glossary-9">energy</a> within an <a data-lesson="research-into-ecosystem-dynamics" data-subject="biology" data-tutorial="ecosystems" href="https://app.ulearngo.com/biology/ecosystems/research-into-ecosystem-dynamics">ecosystem</a> essentially answers this question. To survive, one must eat. Why? To get energy. Food chains and webs describe the transfer of energy within an ecosystem, from one organism to another. In other words, they show who eats whom.</p>
<h2>Food Chains and Food Webs</h2>
<p>Food chains and food webs are diagrams that represent feeding relationships. Essentially, they show who eats whom. In this way, they <a href="https://app.ulearngo.com/tutorials/history-of-life-ii/ring-of-life-models">model</a> how energy and matter move through ecosystems.</p>
<h3>Food Chains</h3>
<p>A <strong>food chain</strong> represents a single pathway by which energy and matter flow through an ecosystem. An example is shown in the figure below. Food chains are generally simpler than what really happens in nature. Most organisms consume—and are consumed by—more than one species.</p>
<div class="wp-caption alignnone" style="width: 451px"><img alt="An example of a food chain that includes producers and consumers" height="500" src="https://data.ulearngo.com/assets/4c458234-caf6-4615-9c83-f6c2b63948ab" title="An example of a food chain that includes producers and consumers" width="451"/><p class="wp-caption-text">This food chain includes producers and consumers. How could you add decomposers to the food chain?</p></div>
<h3>Food Webs</h3>
<p>A <strong>food web</strong> represents multiple <a data-lesson="connections-of-different-metabolic-pathways" data-subject="biology" data-tutorial="cellular-respiration" href="https://app.ulearngo.com/biology/cellular-respiration/connections-of-different-metabolic-pathways">pathways</a> through which energy and matter flow through an ecosystem. It includes many intersecting food chains. It demonstrates that most organisms eat, and are eaten, by more than one species. Examples are shown in the figures below and below.</p>
<div class="wp-caption alignnone" style="width: 491px"><img alt="An example of a food web" height="500" src="https://data.ulearngo.com/assets/8187a2a9-ca57-443d-b16c-11d2288566fb" title="An example of a food web" width="491"/><p class="wp-caption-text">Food Web. This food web consists of several different food chains. Which organisms are producers in all of the food chains included in the food web?</p></div>
<p><img alt="Two more examples of food webs" src="https://data.ulearngo.com/assets/b7d82e72-fd64-4d03-876c-dd527d66d8f1" title="Two more examples of food webs"/></p>
<p>Examples of food webs.</p>
<p><iframe allowfullscreen="allowfullscreen" frameborder="0" height="318" src="https://www.youtube.com/embed/TE6wqG4nb3M?rel=0&amp;modestbranding=1&amp;cc_lang_pref=en&amp;cc_load_policy=1" width="418"></iframe></p>
<h3>Science Friday: Can Underwater Parks Protect Coral?</h3>
<p>Coral communities are incredibly important for marine life. In this video by Science Friday, Marine John Bruno and Elizabeth Selig describe the effects of local Marine Protection Areas on preserving coral.</p>
<p><iframe allowfullscreen="allowfullscreen" frameborder="0" height="318" src="https://www.youtube.com/embed/w8cRcj-Z_7o?rel=0&amp;modestbranding=1&amp;cc_lang_pref=en&amp;cc_load_policy=1" width="551"></iframe></p>
<h2>Summary</h2>
<ul>
<li>Food chains and food webs are diagrams that represent feeding relationships.</li>
<li>Food chains and webs model how energy and matter move through ecosystems.</li>
</ul>

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Food Chain

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Discover the intricacies of ecosystems, energy flow, food chains, trophic levels, biomes and climate, vegetation zones in Nigeria, population growth patterns, biodiversity, and environmental issues such as air pollution and global warming.


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