Nature: Ecosystem dynamics

Question 1

GIS

Answer 1

computer software that uses spatial data and links other data to that in order to create a model.

Question 2

The earth exists of: (4 spheres)

Answer 2

• Cryosphere
• Biosphere
• Lithosphere
• atmosphere

Question 3

Cryosphere

Answer 3

“Geography”

• climate
• soils
• water
• landscape
• ‘urbanscapes’

Question 4

Lithosphere

Answer 4

“Geology”

• Rocks, deposits
• Tectonics

Question 5

Biosphere

Answer 5

“Ecology”

• vegetation
• animal life

Question 6

The core disciplines in sustainable science

Answer 6

geography and ecology

Question 7

Land degredations

Answer 7

is the reduction or loss of the biological and economic
productivity and complexity of terrestrial ecosystems, including soils,
vegetation, other biota, and the ecological, biogeochemical and
hydrological processes that operate therein, in arid and semi-arid lands,
resulting from various factors including climatic variations and human
activities

Question 8

Erosion uncertainties

Answer 8

• It is difficult to distinguish man-induced erosion and other forms of degradation from natural changes in the landscape.
• It occurs over a long timescale and is therefore difficult to distinguish past from present processes and causes.