climate change

Half of the carbon emitted into the atmosphere goes into the ocean.

t

A climatologist removes an ice core sample from the Antarctic. She finds volcanic ash at the bottom of the core, followed by increasing amounts of dissolved oxygen as she goes to the top of the core sample. Which of the following can be concluded based on this information?

A volcano erupted, followed by a period of increased oxygen in the atmosphere.

Based on computer models, it is certain that the global temperature will continue to increase indefinitely.

f

Over the past one thousand years, the temperature of the earth has consistently risen, with every year recording a higher temperature than the previous year.

f

The Kyoto Protocol is a universally accepted treaty on global warming.

f

The levels of carbon dioxide are at the highest that they have ever been in the history of the earth.

f