Harry lives in the city and he has a lung condition known as asthma on certain days Harry has to stay inside because pollutants in the air make it difficult for him to breathe which of these pollution sources or non-point source is that might bother hairy if he goes outside choose to buy apply a cars on the highway b his gas fuel lawnmower c nearby factories and d smoke from their grill

[content deleted] - user123802726recklesschicken

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.