From the list given below, type the correct answer in the spaces provided.
Hint:James Joule, Christian Bernard, John Kay, Jethro Tull, Andrew Meikles, Alexander Flemming, Robert Ross, Robert Backwell.
1. The first successful heart-transplant was performed by.
2. invented the seed-drill.
3. discovered that penicillin could be used to cure a wide range of bacterial diseases.
4. discovered that the female anopheles mosquito carried malaria parasites.
5. started the first successful cross-breeding of animals.
6. The first mechanical thresher was invented by .
7.proved that heat is form of energy.
8. The first flying shuttle was invented by .