Science_gr2-teacher Lhet

What materials are considered "greens" in composting?

• Plastic and glass

• Food scraps and grass clippings

• Dry leaves and twigs

What is the role of "browns" in a compost pile?

• Add nitrogen

• Add carbon

• Keep the pile wet

What should you NOT add to a compost pile?

• Coffee grounds

• Fruit peels

• Meat and dairy

Why is it important to turn the compost pile?

• To remove pests

• To add water

• To provide oxygen for decomposers

What does finished compost look like?

• Shiny and smooth

• Dark, crumbly, and soil-like

• Wet and sticky

What organisms are the primary decomposers in composting?

• Cats and dogs

• Bacteria and fungi

• Birds and squirrels

What do earthworms do in composting?

• Produce oxygen

• Eat and grind organic materials

• Stop decomposition

What happens to the materials during decomposition?

• They turn into water only

• They disappear completely

• They break down into carbon dioxide, water, and nutrients

What is the final product of decomposition called?

• Fertilizer

• Humus

• Mulch

What is the first level of the energy pyramid?

• Primary consumers

• Producers

• Secondary consumers