Question

provide evidence and reasoning to support your claim. claim: nutrient runoff from agricultural land contributes to hypoxic conditions in the gulf of mexico. evidence: b - nitrogen levels in the mississippi river and its tributaries remain high throughout the year. reasoning: - hypoxic conditions in the gulf of mexico are seasonal and are most prominent in the summer. - hypoxic conditions in the gulf of mexico are not seasonal. - nitrogen levels in the mississippi river and its tributaries are seasonally highest in the spring and early summer.

Explanation:

The Mississippi River and its tributaries receive nutrient runoff from agricultural land. High nitrogen levels are a key nutrient contributor. Since nitrogen levels in these water - ways are seasonally highest in spring and early summer and hypoxic conditions in the Gulf of Mexico are most prominent in summer, there is a temporal correlation suggesting a causal link.

Answer:

• Evidence: Nitrogen levels in the Mississippi River and its tributaries are seasonally highest in the spring and early summer.
• Reasoning: Hypoxic conditions in the Gulf of Mexico are seasonal and are most prominent in the summer. There is a temporal correlation between high nutrient (nitrogen) levels in the river system and the occurrence of hypoxic conditions in the Gulf, suggesting that nutrient runoff from agricultural land (carried by the Mississippi River) contributes to the hypoxic conditions.