An object's motion changes a. when the forces acting on the object remain balanced. b. only if the object is at rest when a force acts upon it. c. only when a nonzero net force is applied to the object. d. all of these
Need will mark ! which features are created by groundwater erosion and deposition? check all that apply. a. stalagmitesb. sinkholesc. rillsd. stalactites e. gullies f. rivers
Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries