Ecosystem

Which one of these is an ecosystem?
Forest
Rock
Tree
Salt water pool
What is a flow of energy?
When an ecosystem has energy waves around it.
When things in a ecosystem live off each other.
What is a mutualism?
When 1 organism benefits from the other while the other gets nothing in return.
When something kills and eats it
When 2 organisms benefit from each other.
What is commensalism?
When 1 organism benefits from the other while the other gets nothing in return.
When 1 organism benefits from the other while the other is getting harmed.
When 2 organisms benefit from each other.
What is parasitism?
When 1 organism benefits from the other while the other is harmed.
When 3 organisms benefit from each other.
When 1 predator kills and eats it's prey.
What is predation?
When a predator kills and eats it's prey.
When a rock eats a frog.
When a tree falls over and crushes something.
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