Exploring Ecosystem Factors and Interactions

What is the best definition of a biotic factor in an ecosystem?

• A non-living part of the environment

• A living or once-living organism in the environment

• A chemical found in soil

• A type of weather pattern

Which of the following is an example of an abiotic factor?

• Kangaroo

• Eucalyptus tree

• Sunlight

• Wombat

Which of the following is NOT a biotic factor?

• Bacteria

• Water

• Grass

• Fungi

Which of the following best describes abiotic factors?

• Living organisms in an ecosystem

• Non-living physical and chemical elements in an ecosystem

• Only plants in an ecosystem

• Only animals in an ecosystem

Which of the following is a biotic factor in a river ecosystem?

• Rocks

• Fish

• Water current

• Temperature

Which of the following is an abiotic factor that can affect plant growth?

• Insects

• Soil pH

• Birds

• Fungi

Which of the following is an example of a biotic interaction in an ecosystem?

• A tree providing shade for a rock

• A kangaroo eating grass

• Rain falling on the ground

• Wind blowing through trees

Which of the following is NOT an abiotic factor?

• Temperature

• Oxygen

• Soil

• Koala

How can human activity impact abiotic factors in an ecosystem?

• By introducing new predators

• By changing water quality through pollution

• By increasing the number of native plants

• By encouraging animal migration

Which of the following is a correct example of a biotic factor interacting with an abiotic factor?

• A rock being eroded by wind

• A fish using oxygen dissolved in water

• Rainwater collecting in a puddle

• Sunlight warming the soil