Consider the Total and Per Capita Ecological Footprints of the Selected

Short Answer

Consider the total and per capita ecological footprints of the selected countries below and then use the data to answer the accompanying question.
$$\begin{array} { | l | l | l | } \hline \text { Country } & \begin{array} { l } \text { Total Ecological Footprint } \\\text { (hectares/person) }\end{array} & \begin{array} { l } \text { Share of Global Biological Capacity } \\( \% )\end{array} \\\hline \text { United States } & 2,810 & ( 25 \% ) \\\hline \text { European Union } & 2,160 & ( 19 \% ) \\\hline \text { China } & 2,050 & ( 18 \% ) \\\hline \text { India } & 780 & ( 7 \% ) \\\hline \text { Japan } & 540 & ( 5 \% ) \\\hline\end{array}$$
-What is the key factor in total environmental impact in most less-developed countries?