Bellringer Send up 1 person from your table group to check their chart with my key for the respiration breakdown chart and worksheet I gave out last class.

Learning Targets Demonstrate the interdependence of photosynthesis and cellular respiration showing how they provide most of the energy for life processes. Describe the role of photosynthesis and cellular respiration as important components of the carbon cycle. Relate energy pyramids to food chains and trophic levels. Explain the conservation of matter and energy between organisms and the environment.

Energy Flow

Energy Flow (Trophic Levels)  Energy Flow (Trophic Levels) Producers- make their own food Consumers- get energy from consuming producers or other consumers

 Producers Producers- capture energy from sunlight or chemicals and use the energy to produce food. Producers are autotrophs- they make food from their environment

2 main types of autotrophs  2 main types of autotrophs One type gets energy from the sun-by photosynthesis Another type gets energy without light- by chemosynthesis

Consumers Consumers are heterotrophs- get energy from other organisms

Pair Share: Give an Example of each  Types of Consumers Herbivores- eat only plants Carnivores- eat animals Omnivores- eat both plants and animals Detritivores- eat dead matter (plants and animals) Pair Share: Give an Example of each

Feeding Relationships  Feeding Relationships Energy flows through an ecosystem in one direction from: 1. the sun or inorganic compounds 2. To autotrophs (producers) 3. To heterotrophs (consumers) Decomposers get energy from decomposing dead organisms

 Food Chain- a series of steps in which organisms transfer energy by eating or being eaten. Food Web- A network of feeding relationships. (More realistic than a food chain)

Food Web Arrows show energy flow!

If all the hares were removed What would happen If all the hares were removed From this community?

Food Webs can become very complex!

 Trophic levels Each step in a food chain or a food web is called a trophic level. Producers are the first trophic level Consumers are the second, third, or higher trophic level Each trophic level depends on the one below for energy

 Energy Pyramid Only part of the energy stored in one level can be passed to the next- most energy is consumed for life processes (respiration, movement, etc., and heat is given off) Only 10% of the energy available within one trophic level is transferred to organisms in the next trophic level 

 Biomass Pyramid Biomass- the total amount of living tissue within a given trophic level. A biomass pyramid represents the amount of potential food available for each trophic level in an ecosystem. 

 All Heat in the End At each trophic level, the bulk of the energy received from the previous level is used in metabolism This energy is released as heat energy and lost to the ecosystem Eventually, all energy is released as heat

 Carbon Cycle Carbon moves through the atmosphere and food webs on its way to and from the ocean, sediments, and rocks Sediments and rocks are the main reservoir (storage)

 Carbon in Atmosphere Atmospheric carbon is mainly carbon dioxide Carbon dioxide is added to atmosphere Aerobic respiration, volcanic action, burning fossil fuels, decomposition of organic materials This adds to green house affects Removed by photosynthesis

Think about it… Grab a sheet of paper from the front table: Discuss with your table partner and draw how photosynthesis and cellular respiration provide most of the energy for life processes. Your drawing should have the following in it: respiration equation, photosynthesis equation, chloroplasts, chlorophyll, mitochondria, autotroph, heterotroph, stomata, roots, water, carbon dioxide, glucose, sunlight, oxygen, ATP