In the passage, the evidence that supports the analysis that human actions are related to bumblebee decline includes:
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Wild bees pick up viruses: This suggests that they may be coming into contact with pathogens that are potentially introduced by commercial honeybees, indicating a link between human-managed bee populations and the health of wild bees.
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People may be saving the bees to death: This phrase suggests that human efforts to conserve bee populations might inadvertently be harming them, potentially through stress or disease transmission, which illustrates a negative impact of human actions.
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Study shows viruses may be spilling: This implies that viruses from commercial honeybee populations are affecting wild bees, which again points to the impact of human practices, such as beekeeping, on wild bee health.
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People have tried to save bees: While this indicates a positive intention, it also raises questions about whether these interventions are truly beneficial, suggesting a complexity in the relationship between human actions and bee populations.
Overall, the connection between human actions (such as beekeeping practices) and declines in wild bumblebee populations is evidenced through these points, indicating that human influence can have unintended consequences on wildlife health.