What’s happening to this rabbit?

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TOPIC: Ecology AIM: How are materials cycled through the environment?

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Presentation transcript:

What’s happening to this rabbit?

Rabbit Decomposition http://www.youtube.com/watch?v=jrSHku6-LFo Is this decomposition? http://www.youtube.com/watch?v=R3Mt2E1M6dU&feature=related No – the ants are scavengers!

* recycle materials in the environment. Decomposers (Saprophytes) fungi, and bacteria which live on dead matter. * recycle materials in the environment. Examples: mushrooms, mold, and bacteria of decay.

Decomposers Organic wastes and dead organisms are eventually broken down to simpler substances by decomposers.

* Through this action, chemical substances are returned to the environment where they can be used by other living organisms.

Thus, the same materials can be reused by different living organisms. Material Cycles In a self-sustaining ecosystem, material must be cycled among the organisms and the abiotic environment. Thus, the same materials can be reused by different living organisms.

Oxygen Water Glucose Carbon Dioxide Use the words below to construct the equations for photosynthesis and cellular respiration Oxygen Water Glucose Carbon Dioxide Photosynthesis: Water + Carbon Dioxide Glucose + Oxygen Cellular Respiration: Glucose + Oxygen Carbon Dioxide + Water

Carbon-Hydrogen-Oxygen Cycle involves the processes of respiration and photosynthesis.

2 1 3 4 5

4? 3? 5? 1? 2? ?

Nitrogen Cycle The nitrogen cycle “recycles” the nitrogen necessary for the production of proteins, essential to all living things.

soil bacteria break down and convert nitrogenous wastes and the remains of dead organisms into materials usable by autotrophs.

 Plants use nitrates for protein synthesis.  Animals which eat plants convert the plant protein into animal protein.

Denitrifying bacteria The Nitrogen Cycle Denitrifying bacteria Nitrogen-fixing bacteria Nitrifying bacteria Decomposers

Legumes

Nodules of Nitrogen- fixing Bacteria

Nitrogen‑fixing bacteria within the nodules (roots) of legumes

1 2 3 4

The Nitrogen Cycle 5 6 1 2 3 4

The Plant Toilet

Venus Flytrap

Pitcher Plant