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3.3 Cycles of Matter. Objectives  Describe how matter cycles among the living and nonliving parts of an ecosystem. ---------------------------------------------------------------------------

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Presentation on theme: "3.3 Cycles of Matter. Objectives  Describe how matter cycles among the living and nonliving parts of an ecosystem. ---------------------------------------------------------------------------"— Presentation transcript:

1 3.3 Cycles of Matter

2 Objectives  Describe how matter cycles among the living and nonliving parts of an ecosystem  Explain why nutrients are important in living systems.  Describe how the availability of nutrients affects the productivity of ecosystems.

3 So Far…  We’ve talked about biotic factors of ecosystems…today and tomorrow were going to talk about abiotic factors…  What are biotic factors?  What are abiotic factors?

4 What are the three most important things you need in order to live???  I once asked this question…

5 What are the three most important things you need in order to live???

6 The Water Cycle  All living things need water to survive.

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8 The Water Cycle

9  Water moves between the ocean, atmosphere, and land through a process called the water cycle.  Evaporation – water changes from liquid to gas.  Transpiration – water evaporates from leaves.  Condensation – water changes from gas to liquid and becomes a cloud.  Precipitation – rain, snow, sleet, or hail.  Can fall into rivers and be carried to oceans  Seep into soil and sucked up by plant roots or become ground water.

10 Assignment - Requirements  Create a comic strip about a “drop” of water that goes through the water cycle.  The “drop must completely go through the water cycle and hit all seven stages on the diagram on page 75.  Evaporation  Transpiration  Condensation  Precipitation  Runoff  Seepage  Root uptake  Underline the seven words used.  Can be in color…more points given for color!!! Due Friday!!!

11 Assignment  Your comic should CAN BE FUNNY AND ORIGINAL!!!  Have your droplet go through sewers, drains, oceans, toilets, whatever you want it to go through.  Give your water human characteristics such as the ability to talk, facial features, hair, clothes, weapons, anything.

12 Objectives  Describe how matter cycles among the living and nonliving parts of an ecosystem  Explain why nutrients are important in living systems.  Describe how the availability of nutrients affects the productivity of ecosystems.

13 Review  What is the autotroph in the following food web?

14 Review What is the autotroph in the following food web? Identify a herbivore in this food web. Identify a carnivore in this food web. Identify a omnivore in this food web.

15  What is the shared role of the bacteria, daphnia, and centipede in this food web?

16 Review II’ll give you the definition, you give me the word: TThe process of going from a liquid to an atmospheric gas. EExamples include rain, sleet, hail, and snow. EEvaporation from the leaves of plants. TThe process of water vapor becoming a cloud.

17 Nutrient Cycles NNutrients – chemical substances an organism needs to sustain life. WWITHOUT NUTRIENTS YOU WOULDN’T BE ABLE TO CREATE TISSUE (grow) OR CARRY OUT ESSENTIAL LIFE FUNCTIONS. Three Key Nutrients: 1)Carbon 2)Nitrogen 3)Phosphorous

18 The Carbon Cycle (pg. 77) CCarbon has many roles: KKey ingredient in living tissue. FForms CO Four Process That Move Carbon: 1) Biological process (photosynthesis & respiration) 2) Geochemical processes (volcanic eruptions) 3) Burial and decomposition of dead organisms (or creation of fossil fuel). 4) Human activities (burning fossil fuels, burning forests)

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20 The Nitrogen Cycle (pg. 78)  All organisms need nitrogen to create proteins.

21 The Nitrogen Cycle (pg. 78)  All organisms need nitrogen to create proteins.  Nitrogen fixation – process of converting nitrogen gas into usable nitrogen in the soil.  Done by special bacteria that live in special roots called legumes. DDenitrification – process of converting usable nitrogen into nitrogen gas. DDone by plants that take up nitrogen in soil.

22 The Phosphorus Cycle (pg. 79) EEssential to living organisms because it forms DNA. SStays in rocks, soils, and dissolved in water. PPlants then absorb the usable phosphorus.

23 Nutrient Limitation SSometimes an ecosystem can be lacking in one nutrient, and be unable to support life. LLimiting nutrient – ecosystem is limited by a single nutrient that is scarce.

24 Closure  Water cycle  Carbon cycle  Nitrogen cycle  Phosphorous cycle  Nutrient Limitation  QUIZ TOMORROW!!!

25 Assignment  To help prepare you for your quiz:  Pg  Pg


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