What Environmental Factor Makes It Very Difficult for Organisms That

question 69

Multiple Choice

What environmental factor makes it very difficult for organisms that live in estuaries?

• A) the movement of water as the river flows into the ocean
• B) the constant fluctuation in the salinity of the water as the salt water and fresh water mix
• C) the fluctuating nutrient levels as the river brings different levels of nutrients to the estuary
• D) the change in water levels as the tide ebbs and flows
• E) the change in the temperature of the water since the river water is colder than the ocean

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