odev 4

##soru 1 carbon dioxide emissions

##cevap

library(WDI)
 df = WDI(indicator='AG.LND.TOTL.K2', country=c('TR','US'), start=1960, end=2018)
 head(df)

##   iso2c country AG.LND.TOTL.K2 year
## 1    TR  Turkey         769630 2018
## 2    TR  Turkey         769630 2017
## 3    TR  Turkey         769630 2016
## 4    TR  Turkey         769630 2015
## 5    TR  Turkey         769630 2014
## 6    TR  Turkey         769630 2013

##soru 2 carbon dioxide emissions ##cevap 2

library(WDI)
 df = WDI(indicator='AG.LND.TOTL.K2', country=c('US'), start=1960, end=2018)
 head(df)

##   iso2c       country AG.LND.TOTL.K2 year
## 1    US United States        9147420 2018
## 2    US United States        9147420 2017
## 3    US United States        9147420 2016
## 4    US United States        9147420 2015
## 5    US United States        9147420 2014
## 6    US United States        9147420 2013

##soru3 GDP PER CAPITA ##CEVAP 3

library(WDI)
 df = WDI(indicator='NY.GDP.PCAP.CD', country=c('TR','US'), start=1960, end=2018)
 head(df)

##   iso2c country NY.GDP.PCAP.CD year
## 1    TR  Turkey       9454.348 2018
## 2    TR  Turkey      10589.668 2017
## 3    TR  Turkey      10894.603 2016
## 4    TR  Turkey      11006.280 2015
## 5    TR  Turkey      12157.990 2014
## 6    TR  Turkey      12614.782 2013

##SORU 4 GDP PER CAPITA ##CEVAP 4

library(WDI)
 df = WDI(indicator='NY.GDP.PCAP.CD', country=c('US'), start=1960, end=2018)
 head(df)

##   iso2c       country NY.GDP.PCAP.CD year
## 1    US United States       63064.42 2018
## 2    US United States       60109.66 2017
## 3    US United States       58021.40 2016
## 4    US United States       56863.37 2015
## 5    US United States       55049.99 2014
## 6    US United States       53106.54 2013