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Chapter 6 Vocabulary Review

Across
Contest between populations to get enough resources to survive
Rain + acid from air pollution that falls to the Earth
Relationship where one organism benefits and the other is harmed
Using less resources to make them last longer
Using less resources
Process of change in an ecosystem where you have an ecosystem that is already destroyed and eventually you get plants and animals returning to the area.
Group of one kind of organism
Both organisms in a relationship benefit
Relationship between different organisms
Animal that is eaten
Down
Process of change in an ecosystem, where you start with bare rock that is gradually turned into soil and leads to the growth of trees, which allows for more animals to live in the area.
Using something again
Relationship where one organism benefits, the other is not affected
Taking old items and making them new or turning them into other items.
Process of cleaning and repairing an ecosystem
Group of populations that live together
When all organisms of a species die out
Waste products that harm organisms and damage the environment
Animal that eats other animals