a forest ranger is in a forest 2 miles from a straight road. a car is located c miles down the road. the forest ranger can walk 3 miles per hour in the forest and travel 4 miles per hour along the road. in the picture below, the forest ranger walks in a straight line to a point x unit from the end of the road on the left, and then along the road.

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.

Consider the image seen here. the image, at point y, represents the process of during which a is being produced.

The smokey mountains have over 2,100 miles of rushing mountain streams and rivers that flow through the park. in each mile lives a diverse community of native fish, amphibians, insects, and larvae, some of which are found only in the southern appalachians. park managers and scientific researchers test many factors such as fish populations, the watersheds and water tests to determine a) too many lizards are present b) the water quality of the stream c) rainwater is running into local streams d) if visitors to the park are overstaying their welcome