Question

(f) suggest one hazard the students should be aware of when collecting data on the sea shore. do not refer to throwing quadrats in your answer.
(g) populations of limpets are monitored to assess the impact of pollution in water. suggest one type of pollution in water that may affect the population of limpets.
(total 11 marks)

Explanation:

Part (f)

When collecting data on the seashore, students should be aware of hazards like slippery rocks (due to algae or moisture), which can cause falls and injuries. Strong waves can also pose a risk, potentially knocking students over or pulling them into the water. Tides changing unexpectedly can trap students if they don't monitor tide times. Sharp objects (e.g., broken shells, rocks) on the shore can cut feet if proper footwear isn't worn.

Water pollution types that can affect limpet populations include chemical pollution (e.g., heavy metals from industrial runoff, pesticides from agricultural runoff), which can be toxic to limpets. Nutrient pollution (eutrophication from excess nitrogen/phosphorus) can cause algal blooms that deplete oxygen or smother limpets. Oil pollution (from spills) can coat limpets, interfering with respiration or feeding. Plastic pollution can entangle limpets or release toxins as it breaks down.

Answer:

One hazard students should be aware of is slipping on slippery rocks (due to algae or wet surfaces), which can cause falls and injuries. (Other valid answers: strong waves, changing tides, sharp objects on the shore, etc.)

Part (g)