The mantle of the moon Select one: a. is composed of two layers. b. may have high levels of iron. c. contains the mineral olivine. d. all of the these.

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

An animal cell (left) and a plant cell (right) are shown. which organelle, labeled x in the diagram, is found in both plant and animal cells?