You are given a new situation: Canada produced its electricity by using fossil fuels and nuclear fission. New Zealand used only alternative, renewable sources to produce their electricity.

and a hint : In the U.S., the majority of electricity is produced by burning coal or other fossil fuels. This causes air pollution that harms the health of living things. The air pollution also causes acid rain and contributes to global warming. In addition, fossil fuels are nonrenewable resources, so if we keep using them, they will eventually run out. The main advantage of nuclear energy is that it doesn’t release air pollution or cause the other environmental problems associated with the burning of fossil fuels. On the other other hand, radioactive elements are nonrenewable like fossil fuels and could eventually be used up.

Please answer this question : Which country contributed less to a global rise in Earth's temperature?
New Zealand
Canada generated electricity through burning fossil fuels, which will contribute more to global warming compared with alternative renewable sources. New Zealand's usage of only alternative, renewable energy sources would therefore produce less greenhouse gas emissions and lead to a lower contribution towards the Earth’s rising temperature..