Tuesday, October 20, 2015

Food Chains, Webs, and Pyramids

       Hello Reader! Last week (as you probably learned from the title) we learned about food chains, webs and pyramid. That lessons was a bit of a review but, it was a great refresher!

  But first, what is a food chain? A food chain is the path by which energy passes from one living thing to another. For example the producers (plants) get their energy from the sun, then the herbivores eat the plants therefore getting energy. Then the omnivores and and carnivores eat the herbivores receiving their energy.

Here's a way to break it down:

Primary Consumers – eat producers
– Secondary Consumers – eat the primary consumers
– Tertiary Consumers – eat the secondary consumers
– Decomposers – bacteria and fungi that break down dead organisms and recycle the material back into the environment

Sometimes it can be so much bigger and become a food web. A food web is when more than one organism is involved the web.

Here's an example of why it is different than a food chain:

The grasshoppers eat the grass the mouse eats the grasshopper, and the owl eats the mouse.

Food Web: The grasshoppers eat the grass, and the mouse eats the grass. The mouse eats eats the grasshopper, and the coyote eats the mouse, and the owl eats the mouse. 

Then the next step to break everything down is a food pyramid.
A food pyramid shows the relationship between consumers and producers at different levels in an ecosystem.

It  shows which level has the most energy and the highest number of organisms.

Thanks for tuning in and I hope you learned something new! Do you have any cool food chain facts, be sure to let me know in the comments below!

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