Cross over? i have no idea lol
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Hope this helps :)
Rhizobia are a "group of soil bacteria that infect the roots of legumes to form root nodules". Rhizobia are found in the soil and after infection, produce nodules in the legume where they fix nitrogen gas (N2) from the atmosphere turning it into a more readily useful form of nitrogen.
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it can result in fish kills and restrictions on human consumption it can change the physiology of fish it can cause long-term alterations of aquatic ecosystems
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Homeostasis
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It is a process that living things use to actively maintain fairly stable conditions necessary for survival.