Question

The idea that organic forms changed through "effort," that the effort the organism makes in using those parts of its body that are most adaptive under given environmental circumstances and little by little as time goes on, that these changes result in new organs that are passed on through heredity, was developed by:

Answer 1

It's evolution, that would be Charles Darwin. The idea that certain traits go away though natural selection(animals with those traits die) and only certain traits are passed on.

Step-by-step explanation:

Look at the finches experiment.