Gawain gave the Lord a green girdle for the green Knight.
The man in the jail house tried to kill or find trouble for Tom Robinson. Luckily Atticus was there and Jem had the idea of following his father because he was worried. Scout later then solved the issue by mentioning Mr Cunningham's trail (or some sort I forgot) and they all realised that Atticus is just trying to do his job and justify the person like how he treats them. At last they went back and Tom wasn't harmed.
Complex sentence is formed by adding one or more subordinate (dependent) clauses to the main (independent) clause using conjunctions and/or relative pronouns.
Answer:
Keeping an eye on your water usage is a good way to save money and help the planet at the same time. Plenty of us have bad habits that could be costing us hundreds of dollars in water bills over the long run.