2.3.1 In which sandy shore zone will you find the mollusc feeding during high tide? 2.3.2 Describe the water conditions found in the zone named in QUESTION 2.3.1 that are favourable for the organism above - NSC Marine Sciences - Question 2 - 2023 - Paper 2

In the upper shore zone, the water conditions are generally characterised by moderate wave action with little turbulence. This helps to provide a habitat for the mollusc, as it allows for the retention of nutrients and a more stable environment for feeding.

The food chain can be described as follows: Mollusc → Bacteria/Worms → Higher-level Consumers. As the mollusc dies, it becomes decomposed by bacteria and worms, which then release more nutrients into the surrounding environment. This enriched environment supports further marine life, thus contributing to the nutrient cycling on sandy shores.