Fact 1: Habitat destruction causes animals to move to find shelter in another habitat.

Fact 2: Human population growth has resulted in habitat destruction, causing massive extinctions.

Given the two facts above, answer the question "What causes animals to move to find shelter in another habitat?" with the following options: 
- death and devastation
 - a tree falling
 - exposure to cold
 - Human population growth
 - games
 - deforestation
 - Human decline
 - moonlight


 

    Human population growth     