Answer: ,Option B.
The Earth's axis has a 23.5 degree tilt.
Explanation:
The Earth axis of rotation is tilted to 23.5 degrees which is relatively to the orbital plane, this lead to differences in seasons of the places on Earth at a particular time. The angles varies overtime but moon gravitational pull prevent it from shifting more than a degree. There is different in seasons in the northern and southern hemisphere because at a time one part of it exposed to the Ray's of sunlight than the other which lead how the Earth's revolve round it's axis.
Grasses because they have a shallow root system and don't take long to grow.
Inbreeding compresses the gene pool, making it more likle for a genetic abbheration to occur.
Eukaryotic organisms contain translocation factors that are suited to perform the same function. A translocation that results in Tu being replaced with G or G being replaced with Tu will not affect the function of the protein.