• It seems plausible that the earth acquired much of its carbon in the form of ...
• It is entirely ( or quite ) possible that the first polymers were comprised of ...
• It is a distinct possibility that some of this condition might be attributable to ...
• Such asteroids stand a good chance of orbital changes.
• It is not unlikely that controlled fusion will some day help relieve the world's energy crisis.
• It may well be that further knowledge of cloud behaviour will suggest new possibilities.
• It is not inconceivable that further investigators may find ways to ...
• It is not unlikely ( or is not improbable ) that this "powder laser" opens up new possibilities in display technology.
• It is conceivable ( or is not improbable ) that most of the published data are in error.
• What took place on the Earth more than three billion years ago may well take place on innumerable planets in the universe.