Chapter 9 biology folio

10,028 views

Published on

Published in: Technology, News & Politics
1 Comment
0 Likes
Statistics
Notes
  • Be the first to like this

No Downloads
Views
Total views
10,028
On SlideShare
0
From Embeds
0
Number of Embeds
6
Actions
Shares
0
Downloads
91
Comments
1
Likes
0
Embeds 0
No embeds

No notes for slide

Chapter 9 biology folio

  1. 1. 9.1 Human Activities that Endanger an EcosystemHuman activities that threaten the ecosystem1)An increase in demand for shelter,food,transport,and raw materials due to the increasing world population brings about negative effects on the ecosystem.2) Conflicts arise between fulfilling human needs and the need to protect the ecosystem.3)Human Activities that Endanger the Ecosystemi) Deforestion causes soil erosion,landslides,flash floods,loss ofbiodiversity,global warming ,greenhouse effect, and climaticchanges.ii)Farming causes pollution and eutrophication.iii)Burning of fossil fuels causes greenhouse effect, global warming and pollution.iv)Industrialisation causes pollution.
  2. 2. The impact of human activities on theecosystema)deforestation1)The extensive removal of trees from forest is known as deforestation.2)Vast areas of forests are cleared for agriculture,development and logging activities.3) The importance of forest involve:

×