Hey, I know this is 37 questions but can anyone just help with anything. It helps a ton. Thanks. If you aren't going to answer the whole thing thats fine. If you answer a few. Make sure to put the number of the question when you provide me the answer. Thanks!

b is the correct answer

i think that it is c, d, and e, hope this

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.

the answer u all are looking for is 4000000000000000000000 million years.