Answer:
During a random experiment on November 6, 1787, Galvani discovered that a frog muscle could be made to contract by placing an iron wire to the muscle and a copper wire to the nerve. ... This discovery played a historical role in bioelectricity as it proved that electricity was not direct in its action.
It is true that studies of animals show that they play only when the physical survival needs have been met; however, there is growing evidence that for children, play is crucial in terms of biological evolution as well as individual development.
There would be no more animals.
Forming an hypothesis, gathering materials, performing your experiment, and determining the conclusion. Also determining independent and dependent variables could be one depending on the teacher. Sorry if I’m wrong!
Fossilization
“Fossilization is released”