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Grade 7 - Topic 1

Across
A type of symbiosis where both organisms benefit
Relationship between organisms of different species that develops over time
Living things in the ecosystem
A type of symbiosis where one organism benefits, the other is unharmed
A type of symbiosis where one organism benefits, the other is harmed
Down
Organisms that can reproduce and have young
Non-living things in the ecosystem
Groups of the same species
Populations of different species living in the same area
Food, water, space, and exchange of gases are all _____ needs