Nutrient Cycles Lesson 5 Nutrient Cycling Nutrient cycling

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Nutrient Cycles Lesson 5

Nutrient Cycles Lesson 5

Nutrient Cycling Nutrient cycling occurs for many different types of matter and over the

Nutrient Cycling Nutrient cycling occurs for many different types of matter and over the next few days we are going to learn about three – carbon, nitrogen & phosphorus. These three elements are particularly interesting because they all have fairly complex cycles and are all very much involved in LIFE. Plants, animals, fungi and all manner of other organisms use these elements and thus we call them nutrients.

Carbon

Carbon

Carbon is the basis for life on Earth. C It is the second most

Carbon is the basis for life on Earth. C It is the second most abundant element in your body. Do you remember how many valence electrons are carbon? Four. Which means it can bond covalently to four other atoms. This allows carbon to form long, complex, and interesting molecules that provide our bodies with structure and fuel.

Please read the pages about the Carbon cycle and Answer Q#1+2

Please read the pages about the Carbon cycle and Answer Q#1+2

Study the Carbon Cycle diagram • The boxed numbers show much is stored in

Study the Carbon Cycle diagram • The boxed numbers show much is stored in that place. Notice where it says 750 gigatons of carbon is stored as C 02 in the atmosphere. How much is stored in other parts of the Earth? • The arrows show carbon moving from one reservoir to another (up means into the atmosphere, down means into the ground or water). Is the ocean absorbing or releasing more carbon each year? Can you think of why? • How does carbon get into living things? • How does carbon get OUT of living things (more than one way)?

Ecological Footprint • Please go to this website to calculate your Ecological footprintcalculator. org

Ecological Footprint • Please go to this website to calculate your Ecological footprintcalculator. org • This estimates how much of Earth’s resources you are using. • Note – you need to enter an email address to start. You can just put your school email in. • Another note: For the question – What percentage of your home’s electricity comes from renewable sources? you can put 100% since the electricity in BC comes from hydroelectric dams • When you get to the results you can see how many Earth’s we would need if everyone on the planet lived like you do (aka used the same amount of resources). Click where it says “See Details”. • Now click on the right arrow to find the solutions – How can you make choices to reduce the amount of carbon your lifestyle releases? Make a note of at least 3 ways you can reduce your ecological footprint. • Feel free to go back into the quiz and mess around with the settings. How can you make your footprint really big? How can you make it really small?

Carbon Cycle Game

Carbon Cycle Game

Nitrogen This Photo by Unknown author is licensed under CC BY-SA.

Nitrogen This Photo by Unknown author is licensed under CC BY-SA.

Nitrogen There is so much of it in the atmosphere - 78% of the

Nitrogen There is so much of it in the atmosphere - 78% of the atmosphere is nitrogen! YET it is limiting factor for most terrestrial (on land) ecosystems - meaning that it is lack of nitrogen that is preventing further/faster growth. Nitrogen is in PROTEIN. You probably know that you need to eat protein. You need to eat protein because you need NITROGEN. Cool eh.

Nitrogen How does nitrogen go from the air into our bodies? Nitrogen gas has

Nitrogen How does nitrogen go from the air into our bodies? Nitrogen gas has to be converted (sometimes several times) into different forms by bacteria which live in the soil. Then plants can take up the nitrogen with their roots. We get nitrogen from eating plants OR eating animals that have eaten plants (or eating animals which have eaten plants. Or… you get the point).

Please read these textbook pages about the Nitrogen Cycle & answer the questions

Please read these textbook pages about the Nitrogen Cycle & answer the questions

Study the Nitrogen Cycle diagram Follow the path from atmospheric nitrogen to how it

Study the Nitrogen Cycle diagram Follow the path from atmospheric nitrogen to how it would get into the body of an animal. How many steps are there?

Phosphorus

Phosphorus

Phosphorus

Phosphorus

Please read these textbook pages on the Phosphorus Cycle & answer Q#1+2

Please read these textbook pages on the Phosphorus Cycle & answer Q#1+2

Study the phosphorus diagram Where is phosphorus stored?

Study the phosphorus diagram Where is phosphorus stored?

Homework Assignment There a few questions to check your comprehension of the nutrient cycles:

Homework Assignment There a few questions to check your comprehension of the nutrient cycles: Carbon, Nitrogen, Phosphorus I will collect these in class

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Extra Videos