Flow of energy and matter

What do all living things need to survive?

• Sunlight
• Food
• Soil
• Electricity

In a food chain, the HAWK in the picture would be an example of a what? 

• Producer
• Secondary Consumer
• Predator
• Decomposer

What gas do leaves absorb during the day?

• Helium
• Carbon dioxide
• Nitrogen
• Hydrogen

What is the main source of energy for most ecosystems on Earth?

• Consumer
• Producers
• Plants
• Sunlight

What is an ecosystem?

• A system of living and non-living things working together
• The flow of energy and matter
• Everything in the environment
• Photosynthesis

 Energy is transferred through a food web.

• True
• False

Which of the following is NOT a decomposer?

• Insects
• Fungi
• Bacteria
• Plants

Some microorganisms are helpful to humans and the environment

• True
• False

Which of the following produce their own food from sunlight?

• Producers
• Plants
• Humans
• Consumers

Which of the following is a characteristic of a herbivore?

• Herbivores eat only plants
• Herbivores eat plants and animals
• Herbivores prey on smaller animals
• Herbivores are the biggest animals in a ecosystem