C Several conditions influence how much oxygen will be dissolved in water. The table below shows some of these conditions.
Ecosystem Condition
Effect on Dissolved Oxygen
photosynthesis
increases
decaying plants
decreases
increasing temperature
decreases
increasing salinity
decreases
increasing water depth
decreases
Toxic chemicals from a spill flow down a river to the ocean and kill most of the grasses in an estuary. What will most likely happen in the ecosystem?
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Photosynthesis will decrease, decay will decrease, and so dissolved oxygen will increase
O Photosynthesis will increase, decay will increase, and so dissolved oxygen will decrease
Photosynthesis will decrease, decay will increase, and so dissolved oxygen will decrease
O Photosynthesis will increase, decay will decrease, and so dissolved oxygen will increase
decrease
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