Which statement about metamorphic and sedimentary rocks is true?
a. both types of rocks form under high temperature, but sedimentary rocks also require high heat
b. only metamorphic rocks show signs of rock layers
c. both types of rocks form under high pressure, but metamorphic rocks also require high heat
d. both types of rocks result from the cooling magma
e. either type of rock can be classified as a intrusive or extrusive

Azoologist is studying four very closely related feline species. she wishes to compare their gestation periods. an observational study is conducted where the zoologist observes the gestation period of 50 randomly selected felines in each species. a one-way anova test is run to test the hypothesis that the average gestation period is the same for each of the four species. a level of significance of 0.05 is used, and a p-value of 0.01 is calculated. based on this result, the conclusion that can be drawn is that: