Which psychologist thought that development occurred in stages?

Jean Piaget

Explanation:

The theory developed by Piaget conceives a model of development where 4 main stages take place.: the sensorimotor, preoperational, concrete operational and formal operational period.

The model implies that children gradually construct knowledge first through direct sensations and experiencing to gradually move to concrete and formal thinking. The stages also imply how intelligence develops and may suggest why sometimes hindering a stage can have important consequences in later life of anyone.

His theories are still so widely used, and many educational and psychological approaches draw on may of his assumptions

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.