Darwin observed how farmers and breeders produced many kinds of farm animals and plants. these plants and animals had traits that were desired by the farmers and breeders. he also noticed how the study of similar body structures and vestigial organs could add to the evidence of evolution. after performing several breeding experiments, he came to certain conclusions and formulated some theories. his theory of evolution and natural selection is the most accepted one. what is the reason behind the acceptance of darwin's theory?

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.