The graph shows a population of rats in a forest habitat over a 10-year period.
The forest was a controlled environment, and no rats were allowed to enter or
leave the habitat.
Population
250
225
1200
200
175
150
Number of Rats (in thousands)
125
4100
100
90
76
75
50
30
45
30
25
27
0+
2
6
78
9
10
5
Year
Based on the graph, at which point is the death rate most likely greater than
the birthrate?
O A. Between years 3 and 4
B. Between years 4 and 5
C. Between years 8 and 9
D. Between years 6 and 7

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.

Compound light microscope