Which of the following is true? a. around 1500ad, the human population began to reach carrying capacity. b. around 1500ad, the human population began to decrease. c. around 1500ad, the human population began to level off. d. around 1500ad, the human population began growing more rapidly.

Text version using the diagram above, match the description to the corresponding location in the carbon cycle model. provide the letter only. carbon dioxide is converted to sugar used for food. carbon trapped in fossil fuels is converted to carbon dioxide. organic carbon is converted to fossil fuels. carbon dioxide is converted to carbonates. sugar is broken down and converted to carbon dioxide. location location location location location