The red-cocked woodpecker is a territorial, non-migratory bird species that lives in mature pine forests in the southern United States. Following more than a century of habitat loss due to deforestation, the red-cocked woodpecker's range dwindled from over half the United States to just a few states by the 1960s.
The food web of the red-cocked woodpecker is shown below.
According to the food web, which of the following will most likely occur if deforestation continues to affect the red-cocked woodpecker population?
The picture below shows the energy flow through a meadow community.
Which statement best describes what will happen if the population of herbivores in the community decreases?
The Edwards Aquifer in South Central Texas is home to several unique species, some of which are found nowhere else in the world. A food web with some aquifer species is shown.
An environmental change that harms which organism would cause the MOST instability in the aquifer ecosystem?
Oil spills in the ocean affect marine food webs. Animals that are initially affected by oil spills include sea otters, seabirds, and other organisms that spend most of their time on the ocean surface.
Based on the food web, how would a significant decrease in the sea otter population due to an oil spill most likely affect this ecosystem?
A food chain is shown.
Which model best represents the amount of energy available for the use of each trophic level represented in the food chain?