Which of the following is true of deciduous forests?
a) characterized by four seasons
b) trees maintain their leaves year round
c) precipitation is concentrated in one season
d) averages 5-10 inches of precipitation annually

Answer is A) characterized by four seasons.

Deciduous forest is characterized by the trees whose leaves fall seasonally.  Trees of this forest grow in areas where there are four distinct seasons and having annual rainfall between 750 to 1,500 mm. The fallen leaves from the trees provide a regular source of organic matter to the soil. The trees in deciduous forest is dominated by broad leaf trees such as oaks, maples, beeches. Besides these trees shrubs and perennial herbs also found in abundance.

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.