1. Using the image of the cross section of the Grand Canyon on this worksheet, explain the geologic history of the area. You will start with the layer Vishnu Schist and end with the Redwall Limestone. Make your answers in bulleted points or just follow the numbers and list each change. You do not have to do the entire picture! Your job is to list the name of the layers starting at the bottom and move your way up. You also need to give the environmental changes that occur in each layer and include detail in your responses similar to what is found in the example from live class. Look at the cross section key at the bottom of the worksheet for help. 20pts.

hope this !

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.