If it is extreme poverty then they can not protect them selves (examples: They cant afford a house they can't buy clothing and sometimes can't even afford food!
Answer:
2 years 11 months and 8 days
A slow change such as continents moving will create differences in ecosystems. This is also the same effect caused by a rapid change such a meteorite striking earth. These two phenomena will create diversity and different living conditions. The slow change however, will give organisms time to adopt giving them a good chance of survival unlike a rapid change which will give most, if not all, organisms little chance to survive.
