_3. Which of these organisms is at the beginning of food chain?
A. algae
C. salmon
B. heron
D. shrimp
4 What causes the changing salinity of water in estuaries?
pls pa sagot bukas na pasahan
A. algae
C. salmon
B. heron
D. shrimp
4 What causes the changing salinity of water in estuaries?
pls pa sagot bukas na pasahan
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Answer:
3. A
4. tide rises, water from the ocean begins to surge into the mouth of a river, bringing with it higher levels of salt. This results in an increase in the salinity of the water in an estuary.