Unit 2 Energy I Organisms Obtain and Use
Unit 2 Energy
I. Organisms Obtain and Use Energy A. Obtain Energy 1. What is energy and where does it come from? 2. Use food to make cells o Calories: measurement of _______stored in food o Kilocalories: measure by _______ needed to raise temp. of 1 L water 1 degree Celsius. o Food is burned to determine amnt of calories
B. How Organisms get food 1. Make their own food B. C. Ex: Plants producers or Autotrophs organism that convert ____ or chemicals into ____ that living cells can use
B. Get food from another source 2. EX: consumers or Heterotrophs B. organism that relies on or _____ another organism for _______ C. Types of Heterotrophs B. Herbivore: C. Carnivore: D. Decomposer:
II. Food Chains show energy moves through the ecosystem. Producer Primary Consumer Secondary Consumer Decomposer
Food Chains show energy moves through the ecosystem. Producer Primary Consumer Autotroph (makes own food) Secondary Consumer Decomposer
Food Chains show energy moves through the ecosystem. Producer Primary Consumer Secondary Consumer Decomposer Autotroph Heterotroph Eats something else
Food Chains show energy moves through the ecosystem. Producer Primary Consumer Secondary Consumer Decomposer Bacteria & Green plant herbivore carnivore fungus Autotroph Heterotroph Eats something else
Food Chains show energy moves through the ecosystem. Producer Make 100%of food 10% Secondary Consumer Primary Consumer 10% Decomposer 10% Green plant herbivore carnivore decomposer Autotroph Heterotroph Eats something else
Food Chains show energy moves through the ecosystem. Producer Make 100%of food 10% green plant Primary Consumer 10% Secondary Consumer 10% 1% Decomposer . 1% 10% carnivore decomposer herbivore Autotroph Heterotroph Eats something else
Food Chains show energy moves through the ecosystem. Producer Primary heat Make 100%of Consumer food heat 10% 100 lbs. Secondary Consumer heat 10% 1% Decomposer heat . 1% 10 lbs. . 1 lbs. green plant herbivore carnivore decomposer Autotroph Heterotroph Eats something else
Energy pyramids show each trophic level (step in a food chain) is supported by the previous level. . —; ; ; ; ; 4 If the ecosystem has very few plants it can not have a lot of predators.
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