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Describe the impact of physical, chemical, and biological agents on the marine ecosystems topic assigned to you by your instructor.

As part of your three response posts, expand on the postings of two of your classmates to:

• describe how humans are impacted by the topic.
• describe the impact of climate change on your topic.
• describe some details that indicate how healthy and how widespread the topic is
• describe how humans impact the topics

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• Initial post: 200-
• References: Two or more references are required to support your assertions.