In what stage of the Demographic transition model so we only see a migration pattern of looking for food and/or shelter? Question 30 options:

Stage 1

Stage 2

Stage 3

Stage 4

Growth through natural increase occurs when the birth rate exceeds the death rate. ... The United States has had declining fertility and mortality rates for most of this ... In the second stage of the demographic transition of these regions, ... The population growth rate is still high, about 1.4 percent in 2005.

Eminent Australian scientist Professor Frank Fenner, who helped to wipe out smallpox, predicts humans will probably be extinct within 100 years, because of overpopulation, environmental destruction and climate change

Explanation:

it is very hard for the climatologists to precisely predict how will the global temperatures be changing so there's lots of models, some of which differ significantly, this is due to multiple factors, and probably the most important is the human activity.

humans have been a key factor in climate change around the globe since the start of the industrial revolution, and in the past few decades the consequences are becoming more obvious. there's lots of emission of pollutants in the atmosphere as well as changing the environment on the surface itself, so it's really hard to predict how will that go in the future because there's some countries that are reducing the damage and are going towards green energy, while others are stubbornly continuing with pollution and damages to the environment.