2 dishes or plastic containers Procedures
1. Pour each bag of candy into a separate container or dish so you can see all the colors
in each bag. Assign a letter to each color of chocolate candies and fruit candies, and
record your key.

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.

i'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"