Environmental Science
In recycling of mineral elements within an ecosystem, the responsible direct acing organism are called

Primary consumers
Producers
Decomposers
Secondary consumers

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Environmental Science
Lead poisoning

reduces O2 carrying capacity of hemoglobin in blood
reduces O2 carrying capacity of myoglobin in muscles
increases O2 carrying capacity of hemoglobin in blood
increases O2 carrying capacity of myoglobin in muscles

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