No, or they wouldn't be legends!
The opinion that is supported by facts is that climate change is influenced by human activities, as evidenced by the increase in greenhouse gas emissions and global temperatures over the past century. This is supported by scientific research and data from multiple sources.
Scientific theory
Usually a research project is the accumulation of facts AND a synthesis of the information into conclusions supported by the facts. Some research projects can be just facts but not as good.
While facts are proof-based, myths are fake (like Medusa) and legends are stories passed on by others that may or may not be true.
What is one common characteristic of legends? They group similar facts into categories. They tell about technology of the future. They surround the solving of a crime. They attempt to explain natural events.
It has Robert Pattinson in it. One of the most obbsessive movies
Supported Alcohol Limitations Played a large role in economic issues
relying on logic.
A theory becomes a fact when that theory is supported by experimental evidence.
Nonfiction...
That is an opinion question that you must answer for yourself after studying the facts.
No. It's all fairy tales, lies, bubbe meissehs, folk legends, myths, and BS.