OBJECTIVES I can define and create a food chain.

The arrow tip always points towards the organisms doing the eating. INTRODUCTION TO FOOD CHAINS Food Chain: is a simple order of feeding relationships describing ______ ___________________. which organism eats another The ____ is the ______________ for food chains. Sun source of energy eagle The arrow tip always points towards the organisms doing the eating. snake frog eater grass- hopper grass food

Label and write descriptions on your food chain diagram. INTRODUCTION TO FOOD CHAINS Label and write descriptions on your food chain diagram. eagle Since consumers _______ make their own food they must eat or other organisms cannot “consume” snake frog Producers form the _____ of all food chains. basis grass- hopper They use the energy in _______ to make their own food sunlight through a process called _____________. grass photosynthesis

FOOD CHAINS Top carnivore: any organism that is __________ by any other. not hunted It’s at the ___ of its food chain. top There are different levels of consumers….. eagle quaternary consumer The ___ consumer in a food chain. It eats ________________. 4th tertiary consumers snake tertiary consumer The ___ consumer in a food chain. It eats __________________. 3rd secondary consumers frog secondary consumer The ___ consumer in a food chain. It eats ________________. 2nd primary consumers grass- hopper primary consumer The ___ consumer in a food chain. It eats _________. 1st producers grass

FOOD CHAINS All organisms eventually die and decompose. eagle is the ___________ of living organisms and the _______ of dead organisms. Detritus: waste matter remains snake are organisms that ___ _______ and break it down into ________. Decomposers: frog detritus eat detritus grass- hopper nutrients decomposers grass are substances needed for an organism’s ______ and _____. Nutrients: The cycle restarts. nutrients growth repair

FOOD CHAINS Food chains can occur in _______ ecosystems. aquatic top carnivore killer whale Marine food chains start with microscopic aquatic organisms called _____________ shark that can perform _____________ to make their own food. phytoplankton photosynthesis larger fish small fish zooplankton phytoplankton