small-scale ecosystem

Question 1

where do sand dunes form

Answer 1

where there is a high tidal range exposing lots of sand, this dry sand is then blown inland

Question 2

what are sand dunes used for

Answer 2

sea defenses and tourism

Question 3

what is the first sand dune called

Answer 3

embryo dune

Question 4

what is the second sand dune called

Answer 4

fore dune

Question 5

what is the third sand dune called

Answer 5

yellow dune

Question 6

what is the fourth sand dune called

Answer 6

grey dune

Question 7

whats inbetween the grey dune and the mature dune

Answer 7

the dune stack

Question 8

what is the last sand dune called

Answer 8

mature dune

Question 9

feature of marram grass

Answer 9

has long tap roots

Question 10

where does sea rocket grow

Answer 10

on the embryo dune

Question 11

human impact on sand dunes

Answer 11

• humans trampled on sand
• killed the marram grass
• destabalies the dune
  -the sand gets blown out

Question 12

how can we prevent the human impact on sand dunes

Answer 12

create footpaths/boardwalks
fences
keep people off the dunes

Question 13

describe the embryo dune

Answer 13

the youngest dune, nearest to the sea where sea rocket grows

Question 14

describe the fore dune

Answer 14

older and slightly higher dune

Question 15

describe the grey dune

Answer 15

found further inland, where conditions for plant growth improve

Question 16

what happens when the marram grass dies

Answer 16

the bare sand is blown away beacause there is no roots from marram grass securing it

Question 17

what happens once the sand is blown away

Answer 17

it leaves large - semi circular hollows known as blow outs