Select the correct answer. in which situation is work being done? a. no force is applied. b. the force does not result in displacement. c. the force and displacement are perpendicular to each other. d. the force and displacement are in the same direction.

The graph shows a trend in an ecosystem over time caused by increased pollution in the region. what can you conclude from the graph? a. there’s lower biodiversity among birds. b. there’s a higher reproductive rate among birds. c. there’s a significant decline in the number of producers. d. other types of animals were unaffected by pollution.

Host danny boyle used a line from what shakespearean play to welcome the athletes and fans arriving in london for the 2012 olympics?

During which phase is the least percentage of the light that hits the moon visible from earth? new moon waxing gibbous waning crescent full moon