Colin walked a distance of 15 miles.

Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.

Logistic growth curves are density-dependent. select the best answer from the choices provided t f

What is "the ring of fire"? a. a type of volcanic eruption b. an area around the pacific ocean c. a circle of volcanoes forming over a hot spot d. a region around a cinder cone in which ash is likely to land