The correct answers are:
a. bridges suspended almost 100 feet off the ground; to be able to walk among the top canopy of a rainforest means that bridges suspended of around 100 feet are required. This is due the fact that in the fierce competition of the trees in the rainforest for getting sunlight, some species manage to reach very big heights to overshadow their competition.
a. True; reclamation can restore an environment affected by mining and mostly return it to a state to be able to sustain its ecosystem. Even though it is not the most perfect method and there's still consequences to the ecosystem, still it is the best so far that manages to return the environment close to its initial shape. Unfortunately it is not a widely used method and the mining companies should definitely be forced to practice it much more.
