Ecosystem Review

All food chains_____________________

• have more consumers than producers
• produce and use same amount of energy
• begin with a producer
• are unhealthy 

An ecosystem where many different kinds of organisms can meet their needs is known to be__________.

• healthy 
• pond habitat  
• unhealthy 
• severe drought

How does energy enter an ecosystem? 

• sunlight
• soil 
• animals 
• invasive species 

What are producers? 

• organisms that store extra food 
• organisms that make their own food
• breaks down dead organisms 
• decomposes nutrients 

Living things acquire matter from their environment and release ________ back into it.

• waste
• sunlight
• air
• soil

Which of the following is an example of a natural change? 

• trees cut down to make paper
• forests cut down to make roads 
• drought that causes plants to die
• no more fish in a pond 

What is an organism that breaks down dead organisms and wastes to live and grown? 

• herbivore
• consumer
• producer 
• decomposer

Which animals are examples of consumers? 

• hawks and plants 
• lion and hawks
• plankton
• algae and fish 

Pollution is anything that people add to the environment that__________________. 

• disappearing particles 
• benefits an ecosystem
• produces plants 
• harms living things 

A lion, captures and eats other animals. What is he considered? 

• prey
• predator
• producer 
• healthy