1.) The author thinks ethnobotany is? A.) not effective
B.) not worthwhile
C.) only good for curing fevers
D.) a valuable science
2.) what is the author’s main point in this passage?
A.) aspirin was the develop many years ago from a salicylic acid tea
B.) all plants contain powerful medicines
C.) important medicine have come from plants
D.) Ethnobotanists study the plant knowledge of native cultures
3.) what does the word shaman in the last paragraph mean?
A.) A person who looks at plants used by native healers
B.) A person trained to know which plants are good for healing
C.) The bark and branches from the cinchona tree
D.) the study of native healing
4.) What did Native Americans use powder from the cinchona tree for?
A.) to fight diabetes
B.) to cure malaria
C.) to treat fevers
D.) to treat pain
5.) Describe how medicines that are used to treat leukemia and Hodgkin’s disease were discovered.
6.) Why do some ethnobotanists believe that shamans could be an important link in the process of turning plants into prescription?
Plz hurry ASAP

You will create a molecular clock model for an arthropod gene. follow these guidelines to make your model: . your timeline will span from 90 million years ago to the present. the common ancestor in your model is an arthropod that lived 90 million years ago. the gene that you'll track codes for a protein in the species venom . the dna sequence youll track contains 10 nitrogen bases. you can choose the order of the bases and where the mutations occur. this gene mutates at a rate of approximately 0.76 base pairs every 17.1 million years. to build your model,/ calculate the estimated time period it takes for 1 base pair to mutate. the first time period will only show the common ancestor. at the beginning of the second time period, three lineages will diverge from the common ancestor, each with a different mutation in their gene sequences. the first and third descendant species will survive for the rest of the timeline. the second descendant species was extinct 50 million years ago. calculate how long it will take for one full base pair mutation to occur. explain your reasoning by constructing a mathematical equation