Warm Up 8 3/18 Autotrophs are also known as _____. Autotrophs make their food through what 2 processes? Heterotrophs are also known as ___. Meat eater Plant eater Meat + Plant eater Bacteria + Fungi that breaks down dead matter Plant/animal remains & other dead matter eater

9. What is the difference between a food chain & food web. 10 9. What is the difference between a food chain & food web? 10. Each step in a food chain or web is known as 11. Copy this food chain down.. Algae small fish squid Which ways would the arrows point?

Ch. 25-34 or use your phones Create a food web with at least 10 organisms. (up to 5 XC points for 15 organisms) Choose a ecosystem Draw out organisms, label them Draw arrows accordingly Label 1 food chain: producer, 1st level consumer, 2nd level consumer, 3rd level consumer, 4th level consumer… AKA primary consumer, secondary consumer, tertiary consumer, quaternary consumer

Warm Up 8 5. 6. 3/17 Happy St. Patty’s Day!! 3. 4. What is ecology? Put the following in order from smallest to largest: biome, individual, community, population, ecosystem, biosphere 3-6. Match the picture with one of the levels of organization. 3. 4. 5. 6.

3.2 Energy Flow All organisms need energy to power life’s processes Where do we get our energy?

The SUN is the main energy source for life on Earth

Autotrophs- organisms that can capture energy from sunlight to produce their own food AKA Producers- produce their own food

Photosynthesis- plants, some algae, and certain bacteria use sun’s energy and convert H2O & CO2 to oxygen and sugar

Some autotrophs do NOT use sunlight Chemosynthesis- when organisms use chemical energy to produce carbohydrates

Consumers- organisms that rely on other organisms for their energy and food supply AKA heterotrophs- can NOT make their own food

Detritivores- eat plant & animal remains and other dead matter (earthworm, mites, snails)

Energy flows through an ecosystem in one direction

Food Chain Series of steps in which organisms transfer energy by eating and being eaten

Food Web Network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem

Trophic Level Each step in a food chain or food web

Create a food web with at least 10 organisms. Choose a ecosystem Draw out organisms, label them Draw arrows accordingly Label 1 food chain: producer, 1st level consumer, 2nd level consumer, 3rd level consumer, 4th level consumer