Fill in the blank of the following sentence: 

"Global warming is ___ to have serious consequences on our environment."
"Global warming is believed to have serious consequences on our environment."
Complete the following task based on the instruction and optional input provided.### Instruction:
Fill in the blank of the following sentence: 

"Global warming is ___ to have serious consequences on our environment."

### Output:
"Global warming is believed to have serious consequences on our environment."