1
An organism is a
Living thing
What provides food energy for humans?
The sun
What is the process of breaking down food?
Digestion
What type of organism is a lion?
A consumer
What type of organism is bacteria?
A decomposer
There are three roles in an ecosystem. These roles are called
Producers, consumers, decomposers
What are three examples of a producer?
Algae, Cacti, Plants
What are three examples of consumers?
Orcas, sharks, hawks, lions
What are three examples of decomposers?
Bacteria, mushrooms, earthworms, fungi
What are examples of an ecosystems?
Ocean, jungle, rainforest, forest, swamp, beach, pond, a river, desert, tundra
All living and nonliving things make up a(n)
Ecosystem
Tiny plantlike organisms called ________ are food for many pond animals.
Algae
Scientists that study ecosystems and teach other people about them are called
Ecologists
Energy enters most ecosystems as
Sunlight
A(n) ___________ is any organism that makes its own food.
Producer
What is the process called by which plants convert sunlight into food?
Photosynthesis
What do plants turn sugar into for storage?
Starch
What do plants produce during photosynthesis?
Oxygen
What do all food chains have in common?
They all begin with a producer.
What do living things obtain and release?
Matter, waste
An organism that consumes other organisms is called a
Consumer
A forest has 4 layers. These layers are called
Emergent layer
Canopy
Understory
Forest floor
What is the primary source of energy for most ecosystems?
Sunlight
What happens when an animal dies?
It breaks down into the soil and air.
An organism that eats dead plant material and waste is called a
Decomposer