Atoms of different elements always combine in the same way.
John Dalton noted that if the components are added to one exacerbated, the share of their masses will dependably be the same. Dalton's been an English scholar. The component mass of that mix is measured by the confirmation of the presence of molecules assembled by John Dalton.
I believe heterotrophs are organisms that get their energy by eating other organisms. These organisms are also called predators
The answer is "All of the above".
