For Prof. Eliud Peterson only

Year (BC) CO2 Concetration(ppm) 8000 217

18000 189 28000 205 38000 201 48000 190 58000 210 68000 227 78000 222 88000 208 98000 226

108000 246 118000 265 128000 263 138000 192 148000 192 158000 204 168000 198 178000 213 188000 231 198000 243 208000 245 218000 212 228000 245 238000 230 248000 204 258000 185 268000 231 278000 208 288000 240 298000 242 308000 256 318000 272 328000 234 338000 220 348000 193 358000 206 368000 230 378000 246 388000 255 398000 278

KEY:Black- CO2 concentration in (ppm)

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CO2 concentration(in ppm)

CO2 Concetration(ppm) over Time

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Time(years in BC)

Concetration(ppm) over Time

CO2 Concetra on(ppm)