Because migration and and other seasonal movements can affect the possibility of finding a mate, stresses, that could affect offspring survival(can vary with season), and also availability of thing that are available for the offspring.
Global warming is the answer
The epiphyseal plate is the area of elongation in a long bone. It includes a layer of hyaline cartilage where ossification can continue to occur in immature bones. We can divide the epiphyseal plate into a diaphyseal side (closer to the diaphysis) and an epiphyseal side (closer to the epiphysis).
An organism is multi cellular, has chloroplasts and is made up of eukaryotic cells will be placed in Eukarya domain by a scientist. The domain Eukarya arose more that 1.7 billion years ago. It originated from the first prokaryotic organisms. I hope that this is the answer that you were looking for and hope that it helps you.