The average ages at which an individual displays certain abilities are known as
A developmental norms
B. process of maturation
percentile
D. proximodistal trend
ma
n
o
t tbbt
from the
b
.

Which plains area lies in both the united states and canada? altiplano central canadian shield coastal plains great plains

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.