There's four stages in the classical demographic transition model:
Stage 1 - Pre-transition
In this stage, the birth rates are very high, but also the life expectancy is very low, thus the growth of the population is slow.
Stage 2 - Early transition
In this stage, the birth rates are very high, but the life expectancy is increased, so the population grows rapidly.
Stage 3 - Late transition
In this stage, the birth rates decline slightly, and the life expectancy is a bit higher, thus the population growth is slowing down.
Stage 4 - Post-transition
In this stage, the birth rates are declined significantly, the life expectancy is pretty high, so the population is either growing very slowly, or it is declining.
Because it is a habitable planet that is capable of supporting living creatures
Pericles instituted the world's first democracy in Athens.
Answer:
My answers are according from the Wikipedia
Explanation:
Spanish people, who in 2016 were ranked fourth in terms of life expectancy with 82.9 years, are projected to have an average lifespan of 85.8 years in 2040 — the longest in the world. They will relegate Japan — whose average lifespan of 82.9 years ranked them first in 2016 — to second place with 85.7 years.
