Kate is remodeling her kitchen. She goes shopping for a refrigerator. She finds three models that suit her needs. Model A - Price $445, estimated energy cost per yr $38 Model B - Price $463, estimated energy cost per yr $32 Model C - Price $323, estimated energy cost per yr $43 All three models have an estimated lifetime of 10 yrs. She needs help in deciding which one to buy. Which model would you recommend to Kate that makes most economical sense

His ballance should be $65

Gamma-rays can kill living cells, a fact which medicine uses to its advantage, using gamma-rays to kill cancerous cells.

Answer proprietary product technology;

Combining the emissions released by fossil fuel burning and  the carbon released via land use change, we get a total of 8.7 gt. since the problem states that the oceans "take up" or sequester  2.4 gt carbon  per year, we subtract that value from 8.7 gt, leaving us with 6.3 gt of carbon. since the problem states that 3.4 gt carbon dioxide emissions end up in the atmosphere, the "missing sink" of carbon takes up 2.9 gt, a value we got by subtracting the 3.4 gt amount recorded from the 6.3 gt carbon left available after the oceans sequester the carbon dioxide.