Answer:
1. the answer is b; the passage is mostly about living walls and how they help
2. the answer is d; the sentence before talks about 'high rise buildings'
3. the answer is a; air conditioners are an example of energy use
4. the answer is d; the first three words are 'containers holding soil'
5. the answer is d;
6. the answer is d;
i'm not sure on all of these so you may want to check my answers before using them(if you do decide to)
