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Decreased
Australia's population has increased
it has increased nd decreased depending on what animals and regions
No, The population increased because people are living longer. It is expected to decrease later on.
Increased
Since the original atmosphere, the gases which have decreased are water vapour and carbon dioxide and the gases which have increased are nitrogen, oxygen
It has increased.
yes
India's population hasn't decreased since 1920.
American production has decreased every year since 1968
The population has increased because of a few reasons. One reason is because the death rates has decreased a lot because of the medicines ,they have gotten a lot better from our newer knowledge. The birth rates are increasing a little because of the unawareness of the people, and the parents consider the children growing up and owning there businesses and making themwealthier, since the death rates have decreased there is more births than deaths, so the population gets higher.
Chickenpox has decreased significantly in the last 20 years in the US since chickenpox vaccine was approved in the US in 1995.