订阅:
博文评论 (Atom)
The last Humangeo class
Ok... it is really sad to say goodbye, but the good thing is we can still meet in the School! I have a Robotic competition this Sunday and ...
-
today we saw a lot of population pyramids and learnt about how to decide this is a developing country or a developed country. And I check ...
-
Population Ratio Defined as the number of the males per 100 females in the population. Developed countries have more females than males t...
-
Total Fertility Rate(TFR) TFR: average number of children born per woman for a population to remain the same, the TFR must be 2.1 higher ...
没有评论:
发表评论