We Are Currently ________ Years Overdue for a Glaciation

Multiple Choice

We are currently ________ years overdue for a glaciation.However,we are currently experiencing global warming because of the addition of greenhouse gases by the ________.

A) 2,000;eruptions of volcanoes
B) 2,000;burning of fossil fuels
C) 10;000;increase in solar radiation
D) 10;000;decrease in albedo of Earth