He proved conclusively that any southern continent that might exist lay under the polar ice.
It is a view difficult to prove, and probably few will acknowledge that Clarke has conclusively proved it.
Scientific evaluation has not conclusively linked asthma and diet.
The agricultural department of the government of Bengal are now fully alive to the importance of fostering the jute industry by showing conclusively that attention to scientific agriculture will make two maunds of jute grow where only one maund grew before.
Breast cancer has never been conclusively proven or disproven as a cancer caused by birth control pills.