Here's the evolutionary process. We started off as bacteria ( some say from meteors) which then kept on adapting and changing in the water to fish. These fish became frogs (but thats reptile evolution). Anyway, we stayed fish until around the jurassic when we were whales. we eventually crayled onto land into something like a tiger, then we got smaller like rats. Dinosaurs went extinct but we were too small to be effected, so we then started getting bigger again. we became monkeys. these monkeys lived dominantly in Africa and Europe. the europeans were too stupid to evolve and died out, but the africans got smarter, invented fire and eventually became us.
Many of the animals began to die off and became extinct.
The origin of free oxygen
Finding a Paleozoic fossil would change our thinking completely, we would have to rethink the entire evolution of animals and the conditions on Earth all the way back to and including the Paleozoic. That is 500 million years of geologic history to rewrite.
During the devonian time period most of land was under water.
The appearance of photosynthetic organisms
Warm, shallow seas covered much of Earth's surface during early Paleozoic time.
precambrian era, paleozoic era, mesozoics era, cenozoic era
living organisms - study island answer (:
trees
it changes by all the ice melting ,there fore we flood.
earths tempertures
how does earths distance from the sun change throughout the year
It can change