Earth is always rotating around the sun that means if it were winter on one side of the world, (that is not on the side of the sun) the other side of the world would be summer, ( the side that the sun is shining on)
Natural gas is a NONRENEWABLE source of energy. All the other ones are renewable.
-Seth
1/4 if by express you mean in the genotype
1/2 if by express you mean in the phenotype
I believe it would be Mitochondria