21. Which of the following can help increase energy efficiency in the transportation industry?
a. Cogeneration
b. smart meters
c. LEED certification
d. hydrogen fuel cells
e. molten salt systems

1.the evidene of the reaction

2.yes

3.yes

1. a tropical dry forest carries out more rapid nutrient cycling

we would need to see the picture to answer it

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.