According to Alderfer's ERG theory, A : needs are related to each other in a stair-step fashion. B : Adler's growth needs match
up with Maslow's lower-order needs. C : satisfied lower-level needs can become reactivated when a higher level need cannot be satisfied. D : existence needs are the highest level needs.
Temperate deciduous forests are most notable because they go through four seasons. Leaves change color in autumn, fall off in the winter, and grow back in the spring; this adaptation allows plants to survive cold winters.
