he discovered oxygen
Joseph Black did discover carbon dioxide.
Oxygen
Joseph priestly
The dinitrogen monoxide (N2O) was discovered by Joseph Priestley in 1772.
He discovered it 1897.
Feather
He was a botanist so he discovered plants.
Joseph Sharkey
Joseph Fourier
i dont know the answer i want the answer myself
Joseph Fourier is a French mathematician and physicist. Fourier is generally credited with the discovery of the greenhouse effect.
Joseph Henry did not discover oxygen. Joseph Priestley and Carl Wilhelm Scheele are the two men who independently discovered oxygen in 1774. Scheele actually discovered it first, but Priestley was the first to publish his findings. Joseph Henry is the person who discovered the electromagnetic phenomenon of self-inductance.