Unit 12: Living Systems Review

Front

What is the primary source of energy for most ecosystems?

Back

The Sun

Tags

VA.4.3.b

Front

What best describes a community in an ecosystem?

Back

Different populations living together in an area

Tags

VA.4.3.a

Front

What is a food web?

Back

A network of interconnected food chains

Tags

VA.4.3.b

Front

How can changes in an organism's habitat affect its life cycle?

Back

It may alter the stages of its life cycle

Tags

VA.4.3.c

Front

Which of the following is an example of a population?

• All the fish in a pond
• All the animals in a forest
• All the trees in a forest
• All the rocks in a river

Back

All the fish in a pond

Tags

VA.4.3.a

Front

What role do producers play in a food web?

Back

They produce energy from sunlight

Tags

VA.4.3.b

Front

Reason why organisms are classified?

Back

To make them easier to study and understand

Tags

VA.4.3.d

Front

What is an ecosystem?

Back

A community of organisms and their physical environment

Tags

VA.4.3.a

Front

What happens to energy as it moves through a food web?

Back

It decreases

Tags

VA.4.3.b

Front

How might a change in an organism's niche affect its survival?

Back

It may make it harder for the organism to survive

Tags

VA.4.3.c