1. do you think that you have any myths about race? 2. explain why "race is not biology." 3. do you identify as a particular race? 4. how have other people's perceptions of your skin color or race affected you? 5. how do your perceptions of other people's race affect your ideas about those people or your interactions with them? 6. what do you think can be done to reduce racial prejudice and discrimination in our society?

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.