1
All of the living and nonliving things that interact in an area are called
Ecosystem
Any living thing is an
Organism
An organism that makes its own food
Producer
An organism that gets food by eating other organisms
Consumer
All of the energy humans use once came from the
Sun
An organism that breaks down dead organisms and their wastes
Decomposer
The wastes of decomposers go into the ____, _____, and ______.
Air, soil, and water
At each stage of an energy pyramid, what happens to the energy? (2 answers)
It is used or lost as heat
What do the arrows in a food chain represent?
The flow of energy
What makes an ecosystem healthy?
In a ________ ecosystem, many different types of organisms can meet their needs.
Healthy
A drought is a ________ change to an ecosystem.
Natural
What can happen to organisms because of climate change?
They can disappear from Earth
What is anything that people add to the environment that harms living things?
Pollution
Name 3 things plants need for photosynthesis
Carbon dioxide, water, and sunlight
Name two things that plants produce
Oxygen and sugar
What is a plant's waste product
What is matter?
Anything that takes up space and has weight
What cycles through an ecosystem, matter or energy?
Matter
Give two examples of matter in an ecosystem
Air and water