_____ are models that illustrate the energy flow between organisms in an ecosystem.
Maintaining ________ is important to keep an ecosystem healthy.
______ are organisms that can be used as warning signals for changes in an ecosystem.
_____are scientists who study human impacts on ecosystems.
Something that worsens the quality of air, water, or soil is called a ______.
________ species are important to ecosystems and many ecosystems would collapse without them.
What term describes a community of interacting organisms and their environment?
_______ are protected lands in the United States that preserve ecosystem and biodiversity.
Organism that feeds on plants or other animals for energy.
________ are a keystone species found in tide pools.
What is an adaptation that would help an organism to survive in a tropical rain forest?
Which are the Biotic factors?
An organism that can help determine if an environment is healthy or not.
The breaking down or decaying of an organism is _________.
What makes a species invasive?
Which one is a Ecosystem?
Which are the Abiotic factors?
What do Food Chains start with?
Biodiversity is having a huge variety of species in an ecosystem.
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