What is the biggest challenge to wind energy? a. The expense of construction
b. It takes too long to build a large wind farm
C. Wind is intermittent
d. People don't like the turbines blocking views

Natural forces that can alter ecosystems include seasons and climate changes. t or f

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.

Which scientist was the first to propose the heliocentric model of the universe? a. aristotle b. isaac newton c. galileo galilei d. nicolaus copernicus