We hear a great deal about overpopulation, but if air and elbow room were not an issue, show that you could put the entire world population of humans, 7 billion people, into a cube 1 mile x 1 mile x 1 mile. Make the simplifying assumption that all people can fit into a box that is 7' tall, 2' wide and 1' deep.

The way individuals think, believe, and behave defines their: a. intellectual wellness b. personality c. self-esteem d. self-actualization

The graph shows the populations of two species over time. which type of symbiotic relationship does the graph represent? a. commensal b. mutualistic c. parasitic d. parent-offspring e. predator-prey

Luminous objects such as flashlights emit light that we can see. how do we see an object that isn’t luminous? a. the object emits light that reaches our eyes. b. light reflects off the object and reaches our eyes. c. light passes through the object uninterrupted. d. light is fully absorbed by the object. e. we can’t see an object that isn’t luminous.