Which risk increases when gills of fish experience high sediment concentration?

💡 Explanation

When gills encounter high sediment, diffusion pathway obstruction occurs because sediment particles physically block the gill lamellae, reducing surface area available for gas exchange, decreasing oxygen uptake. Therefore reduced oxygen uptake efficiency results, rather than increased osmoregulation, or parasitic rates, because these respond to different triggers.

• Which outcome occurs when cyclic electron flow predominates in a plant's thylakoid membranes?
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