Ecological+relationships

==__Classification__ ==



and for those that didn't believe me, Whales do have mammary's! they didn't call us mammals for nothing!

image from [|whales.findoutnow.org/whale-anatomy.html] = = == = = = = = = = = = = = __**Antarctic food web**__ =

[[image:antarctic_food_web.png width="440" height="554" caption="An antarctic food web"]]
__**A Mountain ecosystem**__ Use the list of species provided in class to make a food web on A3 paper and then answer the questions below, the last two are challenging and you'll have to think really hard in order to answer them if you have time.

__**A) Make a food web of the mountain ecosystem on A3 paper provided**__ Use your teams food web __**B) Questions to answer**__ 1. Find and write out 6 different food chains from your team's food web. (Your food chains should not be similar.) 2. On two of your food chains, identify the producer and three levels of consumers. 3. Identify three organisms, which are at the top of their food chains. 4. Explain what would happen if all of the primary consumer became extinct with examples from this web. 5. Describe what would happen if all of the decomposers became extinct with examples from this web.

__** EXTENSION **__ 6. Predict what would happen if a non-native beetle moved into the area (because the climate changed and winter didn't kill its larvae) and it began to kill off all of the oak trees. 7. Explain why food webs with many species are more resilient than those with few species using examples from this web.

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key words will help for the keys and webs activity:

__**Key Words**__ (some of these words are not needed to be learnt at Key stage 3 level for the end of unit test=*) eating other organisms to meet its energy requirements that eat grass are consumers)
 * //carnivore://** an animal that eats meat (e.g. a cougar)
 * //herbivore://** an animal that eats plants (e.g. deer)
 * //omnivore://** an animal that eats both animal and vegetable matter (e.g. grizzly bear)
 * //decomposer://** an organism that breaks down organic matter (e.g. worm)
 * //predator://** an animal that hunts, captures and kills another animal (the prey) for food
 * //prey://** an animal that is a source of food for a predator
 * //producer/autotroph*://** an organism that makes its own food (e.g. green plant)
 * //heterotroph*://** a consumer organisms that cannot produce its own food and must rely on
 * //consumer://** an organism that feeds upon those below it in a food chain (e.g. herbivores
 * //primary consumer://** herbivores that feed upon green plants or producers
 * //secondary consumer://** carnivores or omnivores that feed upon herbivores
 * //tertiary consumer://** carnivore that feeds on other carnivores
 * //food web://** a complex system of interdependent food chains in a given ecosystem
 * //Law of Conservation of Energy*://** during a physical or chemical change energy is neither created nor destroyed, but may be changed in form and moved from place to place

__**COVER WORK**__ 1) Complete the practice test in your exercise books 2) Complete the graph and questions for homework except don't do Question 10!

__**Biome presentations**__

__**Estimating the size of the school field**__ __[]__