Human habitation is the main reason or causes of deforestation.
no
commercial logging
The human race !
wildfire
Population growth / clearing of lands for agricultural use.
The vegetation in Brazil is the Tropical Rainforest.
clearing of lands for agricultural use
4 hurricanes. This has happened twice. There was one occasion when there were 5 tropical cyclones (tropical depression, tropical storm, or hurricane), but no more than 2 were hurricanes at any given time.
Similarity: Both the Sahel and the Savanna are semi-arid regions characterized by grasslands and scattered trees. Difference: The Sahel is located just south of the Sahara Desert in Africa, while the Savanna is a tropical grassland biome typically found in regions with more rainfall and closer to the equator.
the number one cause of an engine fire would probably be oil leakage.Source: Experience
probably not number one but a huge cause of many deaths
The number one cause of collisions on the freeway is following too closely (tailgating).