A level 2019

Question 1

Explain the development of saltmarsh environment. (4 marks)

Answer 1

• Salt marshes develop in sheltered estuaries behind spits
• As spits develop, the area behind becomes sheltered
• Vegetation is highly adapted and colonises the mud and traps sediment
• Salt marsh is colonised by halophytic vegetation

Question 2

Using Figure 6 and your own knowledge, assess the role of vegetation in the development of this landscape. (6 marks)

Answer 2

AO1:
* Landform: Sand dunes

AO2:
* Dunes develop due to offshore winds and transportation
* Wind blows sand above high-water mark by traction and saltation
* In figure 6, vegetation adapted to area, needing few nutrients and water. Marram grass to colonise area.