Such speed would have seemed (1)........... not so long ago. (BELIEVE)

Scientists now suggest that humans can move (2)........... faster than even that, perhaps as fast as 65 kilometres per hour. (CONSIDER)

For years, it was assumed that simple muscle power determined human speed, but recent suggests otherwise. The most important (3) ............ factor appears to be how quickly the muscles can contract [...] (LIMIT)

The most important limiting factor appears to be how quickly the muscles can contract and thus (4) .............. the time a runner's foot is in contact with the ground. (MINIMUM)

Is our athletic ability inherited? Researcher Alun Williams has (5) ........... twenty-three inherited factors that influence sporting performance [...] (IDENTITY)

[...] factors that influence sporting performance, such as the (6) .................. use of oxygen, and strength. (EFFICIENCY)

As world population rises, predicts Williams, the (7) ............ of there being someone with the right genes [...] (POSSIBLE)

[...] The right genes for these twenty-three (8) ......... will increase noticeably and thus faster runners are likely to emerge in the future. (CHARACTER)

Preffix meaning: again or back. What is the preffix?

What is NOT an adjective suffix?

Misconduct, mismatch, mismanagement.

What is the meaning of mis-?