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The image features a line graph titled "Population of wild birds: 1970-2004" focusing on the United Kingdom, plotting indices for four bird population categories, depicted over the years 1970 to 2004. The vertical axis ranges from 50 to 140 (index = 1970 = 100), and the horizontal axis represents time. Each category's bird population is represented by a specific line: Coastal species (20 species), All species (111 species), Woodland species (33 species), and Farmland species (19 species). Initially, in 1970, all categories start at an index of 100. Patterns vary distinctly among categories through years:
1. Coastal species index shows a fairly steady increase, starting at 100 in 1970, dipping slightly in the early 1970s, then climbing gradually, reaching around 120 in 2004.
2. All species index begins at 100 in 1970, decreases slightly to below 100 by 1976, fluctuates mildly around this range, and ends near 100 again in 2004.
3. Woodland species index starts at 100 in 1970, exhibits some fluctuation, dipping to approximately 90 by mid-1970s, recovering to 100 by 1980, with slight rises and falls, ending just below 100 by 2004.
4. Farmland species index begins at 100, shows a sharp decline to about 60 by mid-1980s, and maintains a relatively flat trend but slightly recuperates, closing near 70 in 2004.
Given the complexity of the image, the above description may not be entirely accurate.
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The line graph demonstrates the inhabitants of different kinds of wild birds in the united kingdom from 1970 to 2004.
Overall, it can be seen that there was an increment trend in coastal species and all species, while the rest of species had experienced a downward trend. Furthermore, all of the species began from same number which was the highest in coastal species and the least was on farmland species at the end period.
Looking into more details, The Coastal species initiated from 100 in 1970 and it was a gradual increment until rapidly grew up around 139 in 1935. Then, it fluctuated following the period and at approximately 132 in 2004 which was the highest number of species in the end period l. Similarly, All species also started from 100 in the beginning l, it slightly climbed up about 111 before it dropped nearly 102 in 1979 and then, it was a gradual fluctuatuon between 1879 and 1994. It remained stable in 1997 at 102 and a minor increased upto 2004.
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