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

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere

Match each medication with its description.