1. Research a microbe that is not native to Pennsylvania - state its location, reservoirs, symptoms, and how it is transmitted to people. If it is not transmitted to people, describe how it is transmitted to non-human animals. 2. Think about the environmental conditions in the area that your chosen organism is located and determine if that organism could possibly impact people (or non-human animals) if it was moved to Pennsylvania. If not, what would need to happen in order for that organism to have an impact?

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.

d we did this already

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.