ecosystem
What is an ecosystem?
A community of interacting organisms and their physical environment
Which of the following is not a component of an ecosystem?
Cities
What is the primary source of energy in most ecosystems?
Sunlight
Which of the following is an example of a freshwater ecosystem?
Lake
What is the role of decomposers in an ecosystem?
To break down dead organisms and recycle nutrients
Which of the following is an example of a natural ecosystem?
National Park
What is the process by which green plants convert sunlight into food?
Photosynthesis
Which of the following is a type of terrestrial ecosystem?
Grassland
What is the term for the variety of life in an ecosystem?
Biodiversity
Which of the following is an example of a keystone species in an ecosystem?
Top predator