C is the answer
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The levels of greenhouse gases in the atmosphere have been increasing due to the widespread burning of fossil fuels by the growing human populations.
Some of this you have to do on your own
Agriculture. When it comes to wheat and grains, Canada has it covered. ...
Energy. Due to its abundance of oil and natural gas, Canada has quickly become a world leader in energy resources. ...
Technology. ...
Services. ...
Manufacturing.
Three spheres that has been shown in the picture are as follows , they are the lithosphere,hydrosphere and the biosphere.
Explanation:
In this picture all the three spheres are connected to each other. Lithosphere means land , in this picture we can see land where cultivation of crops are done , that is the sphere is being used in a proper way.
Secondly we come across hydrosphere that water , water has been used for the irrigation of crops , that is farming is being done .
Thirdly biosphere which means life stock , two living beings are being shown in this picture , they are a buffalo and a child , the child is using the buffalo for ploughing the field.
