Question
Explain how glaciation influences the following features influence human activities.
(i) Mining
(ii) Agriculture
(iii) Fishing
(i) Mining
(ii) Agriculture
(iii) Fishing
Answer
(i) Mining
(ii) Agriculture
(iii) Fishing
- Ice sheets in their scouring effects reduce land surface and depth to expose mineral seams which become easy to mine.
- Some minerals may be buried deep underneath the moraine making it difficult /expensive to mine.
(ii) Agriculture
- Some boulder clay plains, outwash plains and old glacial lake beds have very rich deposits that favour crop farming.
- Glaciated valleys have good pastures that favour transhumance in some countries.
- Some boulder clay deposits create a swampy land which hinders agriculture.
- Glacial deposits lead to the formation of numerous glacial lakes thus reducing the arable land in some countries.
- Alluvial fans within some glacial troughs are good sites for Agriculture because of fertile.
(iii) Fishing
- Some cirque lakes/tarns offer suitable areas for trout fish farming example on the slopes of Mount Kenya.
- Lakes formed through glaciations such as moraine dammed lakes can be exploited for various economic uses such as fishing.
- Some fiords form deep and well sheltered waters favouring fish breeding thus excellent fishing grounds.
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