The repeated use of non-human objects, such as a shoe or a belt, as the preferred or exclusive method of achieving sexual excitement is known as ______

Circadian rhythms exist in plants

Indicate whether this statement is true or false.

Mr. Jones, a sixth grade science teacher, has tried to predict

his students' end-of-the-year grades by looking at their end-of-the-year grades from the previous year. Unfortunately, there does not seem to be any systematic relationship between these two variables. The correlation between these two variables is probably A) near zero. B) positive. C) negative. D) near 1.0.