Which are true about changes in carbon dioxide in the Earth's atmosphere since 1860? Select the two correct answers. (1 point)
• The increases in carbon dioxide are caused by human activity.
• The increases in carbon dioxide can be explained by the Milankovitch cycle.
• The changes are triggered by a new interglacial period.
• The rate of change in carbon dioxide is exponential.
• The increases in carbon dioxide are caused by human activity.
• The rate of change in carbon dioxide is exponential.