An experiment is a procedure by which one seeks to verify an idea (hypothesis) that has been raised based on some phenomenon.
When conducting an experiment, all the variables that are linked to the phenomenon must be considered, eliminating or introducing those that may influence. Experiments vary according to the area of study but always seek the explanation of the results found.
Usually, in a scientific experiment an intentional manipulation of some variable is performed and then the possible effects (consequences) are analyzed.
Reasoning - As ice age and resistant of water became changing in ponds and lake the resource of food started to deplete so evolution became a evolving for creatures aka reptiles.
