Mr Hills Science Class Biodiversity Human Impact UNIT

Mr. Hill’s Science Class Biodiversity & Human Impact UNIT 1

Biodiversity & Human Impact Food Web & Pyramid Interactions • Basic Information • All living things depend on PLANTS. • The connections between living things are called FOOD WEBS.

Food Web & Pyramid Interactions • Basic Information (cont. ) • Example: How is a chicken sandwich connected to plants? • WHEAT bread • PLANT lettuce • CORN chicken • PLANT tomatoes

Food Web & Pyramid Interactions • DECOMPOSER INTERACTIONS • Bacteria, fungi, and earthworms are all DECOMPOSERS. • Decomposers eat DEAD ORGANISMS.

Food Web & Pyramid Interactions • Decomposer Interactions (cont. ) • Why are decomposers important to the food web? • THEY RETURN NUTRIENTS BACK TO THE SOIL.

Food Web & Pyramid Interactions • PLANT INTERACTIONS • Most plants grow IN THE OCEAN. • An example of a plant that lives in the ocean is ALGAE. • Plants make their own food using SUNLIGHT, CARBON DIOXIDE, and WATER.

Food Web & Pyramid Interactions • Plant Interactions (cont. ) • This process is called PHOTOSYNTHESIS, which means “making from light. ” • Animals breathe out CARBON DIOXIDE, and breath in OXYGEN. • Plants breathe out OXYGEN, and breathe in CARBON DIOXIDE.

Food Web & Pyramid Interactions • Plant Interactions (cont. ) • Growing plants without using soil is called HYDROPONICS.

Food Web & Pyramid Interactions • FOOD WEB INTERACTIONS • The food web is based on a food PYRAMID. • As we go further up the food pyramid, there is less ENERGY from plants.

Food Web & Pyramid Interactions • Food Web Interactions (cont. ) • Food Web Diagram – Energy flows THROUGH THE TROPHIC LEVELS.

Food Web & Pyramid Interactions • Food Web Interactions (cont. ) • Food Web Example 1: Food Web

Food Web & Pyramid Interactions • Food Web Interactions (cont. ) • Food Web Example 2: Food Chain

Food Web & Pyramid Interactions • Food Web Interactions (cont. ) • Food Trophic Relationship Pyramid

Food Web & Pyramid Interactions • Why is the bottom of the food chain (web) so important? • BECAUSE EVERYTHING AT THE TOP RELIES ON THE ENERGY PRODUCED ON THE BOTTOM.

Food Web & Pyramid Interactions • Complete the Food Web/Pyramid Assessment Worksheet with a Table Partner. • This will be due next class.

Biodiversity & Human Impact • Unit 1: Vocabulary Review 1 • You will define the following terms. To show you understand each of the terms, you will complete various activities by the end of the week in order to reflect your comprehension. You will use the handout with examples in order to complete the review activity.

Vocabulary Review 1 • Food Webs A SYSTEM OF INTERLOCKING AND INTERDEPENDENT FOOD CHAINS • Food Chain A SERIES OF ORGANISMS THAT DEPEND ON THE PREVIOUSLY NAMED AS A SOURCE OF FOOD

Vocabulary Review 1 • Ecosystem A BIOLOGICAL COMMUNITY OF INTERACTING ORGANISMS AND THEIR ENVIRONMENT • Decomposers THAT ORGANIC AN ORGANISM, ESPECIALLY A BACTERIUM, FUNGUS, ETC. , DECOMPOSES MATERIAL

Biodiversity & Human Impact • Producer AN ORGANISM THAT SERVES AS A SOURCE OF FOOD FOR OTHER ORGANISMS IN A FOOD CHAIN (TYPICALLY PLANTS) • Consumer ENERGY OTHER AN ORGANISM OF A FOOD CHAIN THAT RECEIVES BY CONSUMING ORGANISMS

Vocabulary Review 1 • Watershed AN AREA OR RIDGE OF LAND THAT SEPARATES WATERS FLOWING TO DIFFERENT RIVERS, BASINS, OR SEAS • Estuary WHERE THE STREAM THE TIDAL MOUTH OF A LARGE RIVER, TIDE MEETS

Vocabulary Review 1 • Dead Zone A PLACE IN WHICH NOTHING HAPPENS OR IN WHICH NO LIFE EXISTS • Your vocabulary review assignment will be due at the end of the week.