Fishing & Forestry

Fishing:

Unsustainability: the using up of resources faster than they are produced so that they will not continue in the future

Example: North Sea Cod are over-fished so are reproducing slower than are being caught. The effect of this means the cod population is heavily declining

Forestry:

Humans burn wood or clear land for farming causing deforestation:

Deforestation: 

1. destroys habitats

2. causes soil erosion leading to barren land and potential flooding

3) causes pollution from combustion

4) increased levels of carbon dioxide as loss of photosynthesis