The graph below shows data about three tree species after a glacial retreat.
Based on the data shown in the graph, which of the following events occurred after the glacial retreat?
The data table below shows plant biodiversity of different ecosystems in Glacier National Park. In parts of the park, the glacier is receding leading to succession.
Based on the data in the table, which ecosystem is in the earliest stages of succession?
The graph below shows the change in sea level from the Cambrian period to today compared to today’s sea level.
Which of the following statements correctly describes the trends seen in the data?
The diagram below shows the change in an ecosystem over time.
Which of the following best describes the role of moss in the transition to stage III of the process?
The diagram below shows the change in an ecosystem over time.
Based on the diagram above, in which stage are most species present considered pioneer species?
