84 Nitrogen Cycle 85 Carbon Cycle Warmup Whats
#84 Nitrogen Cycle #85 Carbon Cycle
Warm-up • What’s the difference between food chain and food webs? • What the difference between density dependent and density independent factors. • Smart national park is 24 sq miles. The park homes 60 birds and 8 snakes. What is the population density of birds? Snakes?
The Nitrogen Cycle *Nitrogen is needed to build proteins that assist with the structure of living things *Almost 78% of the Earth’s atmosphere is made up of nitrogen gas (N 2) but most organisms cannot use the nitrogen directly from the environment. It has to be converted or “fixed” into usable nitrogen compounds. The process used to convert N 2 into usable nitrogen is called nitrogen fixation.
The Nitrogen Cycle *Nitrogen fixation is the process of changing nitrogen gas (N 2) into usable nitrogen for plants. *Bacteria that live in the soil carry out most of nitrogen fixation. The diagram on the next slide will explain the nitrogen cycle in greater detail. Copy the information on your handout
Over time different kinds of bacteria release N back in atmosphere where it will bond with another N atom forming N 2 bond. The Nitrogen Cycle continues Herbivores consume plants which contains N Animal waste or dead animals will get broken is down by decomposers and bacteria. This returns N to the soil. Lightning breaks (fixes) N 2 bonds and sends N to soil Bacteria converts the N in soil to ammonia (NH 4) which is absorbed through plant roots
Nitrogen Cycle Videos Brain. POP https: //www. brainpop. com/science/eart hsystem/nitrogencycle/
Nitrogen cycle recap 1. What are two ways atmospheric nitrogen gets into the ground? 2. According to the diagram, how do animals obtain nitrogen? 3. According to the diagram what is responsible for breaking down nitrogen and making it usable for plants and animals? 4. According to brainpop, explain 2 ways extra nitrogen enters the atmosphere
The carbon cycle • https: //nc. discoveryedu cation. com/learn/playe r/7 a 82 d 128 -c 28 b-4 d 5586 f 0 -4783 c 6412 bde
Carbon Cycle Brainpop
Carbon cycle recap 1. What process adds most carbon to the atmosphere? 2. When an animal or plants dies, what happens to the carbon?
Extra… • http: //www. pbslearningmedia. org/asset/lsps 0 7_int_nitrogen/
Recap video of nitrogen cycle https: //youtu. be/v. Z 9 b 5 c 8 BOT 4
Nitrogen Cycle Videos Make. Me. Genius Nitrogen Cycle https: //youtu. be/Za. FVf. Hftzp. I Brain. POP https: //www. brainpop. com/science/earthsyst em/nitrogencycle/
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