Which of the following is the highest taxonomic classification of an organism?

High-latitude ocean water tends to support large planktonic communities because ________.

The graph below shows the probability density function (PDF) of a random variable  which has a normal distribution.  What is the mean of ? [a]  

Educational Attainment and Frequency of Church Attendance No Degree Secondary Degree College Degree 2 2 0 1 2 0 1 2 0 2 1 0 2 1 1 2 0 1 0 2 0 2 1 1 2 1 2 2 2 1 (0 = never, 1 = infrequently, and 2 = two to three times per month or more) What is the sum of squares within (the within-group sum of squares) for these data? Round to four decimal places (0.1234).

Educational Attainment and Frequency of Church Attendance No Degree Secondary Degree College Degree 2 2 0 1 2 0 1 2 0 2 1 0 2 1 1 2 0 1 0 2 0 2 1 1 2 1 2 2 2 1 (0 = never, 1 = infrequently, and 2 = two to three times per month or more) How many degrees of freedom within? Round to four decimal places (0.1234).

In The Cherry Orchard, who throws the party on the most important day in the play?

Educational Attainment and Frequency of Church Attendance No Degree Secondary Degree College Degree 2 2 0 1 2 0 1 2 0 2 1 0 2 1 1 2 0 1 0 2 0 2 1 1 2 1 2 2 2 1 (0 = never, 1 = infrequently, and 2 = two to three times per month or more) Select the most appropriate decision and and reason for decision. 

What is the correct formula for a compound composed of Ca2+ ions and PO43− ions?

Below is the pdf file of the tables provided.    Exam-final-data.pdf

Which of the following statements regarding ionic and molecular compounds are correct? Mark ALL correct answers.