PLEASE PLEASE HELP ME ASAP The graph below is needed to answer the questions :

(the graph is showing the rate of oxygen production a different pH8 levels)

ii) describe the changes in the reaction rate between pH 4 and pH 8

iii) explain the changes in the reaction rate between pH 6 and pH8

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an