13. Ecosystems are extremely delicate and can become unbalanced. What would happen if there's a type of frog that thrives when there's lots of water and it rains a lot? the number of frogs in an ecosystem may increase. How could this present a problem? Other species in the ecosystem may not be able to compete with the frogs as resources are depleted because of the increased frog population. Sometimes ecosystems will correct themselves and become balanced again, while other ecosystems will continue to become more unstable over time.
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16. 4. Symbiosis: any close relationship between species. 1. Parasitism: one organism benefits (the mosquito) while the other (the host) is harmed. 2. Mutualism: both species benefit. 3. Commensalism: one species benefits (the egret) while the other remains unaffected.
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