What makes it possible to see the bright part of the moon from earth? a. light from earth shines on the moon’s surface making it visible. b. the moon makes its own light, which can be seen from earth. c. light from the sun is reflected off the moon’s surface, making it visible. d. the moon absorbs light during the day and reflects it at night.

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.

In this food web, which group would increase in number if snakes were eliminated? a. producers b. decomposers c. primary consumers d. secondary consumers e. tertiary consumers

What undergraduate degree can a student earn at a four-year college (not specific to a field of study)?