Why are coral reefs important?

sand dunes

Groups:

(a) 1

,

(b) 2

,

(c) 3

,

(d) 4

• grey dune

• dune slack

• water table

• mature dune

sand dunes

Groups:

(a) 5

,

(b) 6

,

(c) 7

,

(d) 8

• sea

• embryo dune

• yellow dune

• fore dune

Describe how sand dunes change as you move from the strandline inland.

As you move further away from the beach

• the dunes become less blue in colour

• the dunes become less yellow in colour

• the dunes become yellow in colour

• the dunes become less grey in colour

Describe how sand dunes change as you move from the strandline inland.

As you move further away from the beach, the dunes become less yellow in colour

• and begin to dip

• and begin to turn grey

• and begin to form

• and begin to turn more yellow

Describe how sand dunes change as you move from the strandline inland.

As you move further away from the beach, the dunes become less yellow in colour and begin to turn grey.

• dune slacks can appear at any time

• dune slacks can appear that are seasonally flooded

• dune slacks rise to rainfall levels

• dune slacks are filled befor the sand dunes are lowered

Describe how sand dunes change as you move from the strandline inland.

first stage:

• Embryo dunes form just above the high tide mark, where driftwood and other debris collects

• Embryo dunes form just below the low tide mark, where wood and other debris collects

• Embryo dunes form just low of the high tide mark, where driftwood and other sand collects

Coasts are important to

• people

• underground sea life

• development

• sea

• vegetation

Coasts are important to people and development, because of this they are often used as a

• source of income

• source of health

• source of protein

• source of food

There are concerns that the use of coastal areas may be

• damaged by pollution

• damaging them beyond repair

• damaged by global warming

• damaged by light

Coastal ecosystems are threatened by the following land uses: ​ (a)   ​ (b)   ​ (c)   ​ (d)  

• Tourism
• Industry
• Agriculture
• Deforestation
• Urbanization
• Mining
• Overfishing
• Pollution
• Logging