Question

antarctica mass variation since 2002
data source: ice mass measurement by nasas grace satellites.
credit: nasa
what can we conclude or predict from the line graph above?
ice mass has not really changed.
in 2020 there will be an increase in ice mass.
in 2030 the ice mass will have decreased further.

Explanation:

The graph shows a general downward - trend in Antarctica's ice mass from 2002 to 2012. While we cannot precisely predict future values, the trend suggests continued decline. The first option is incorrect as there is a clear change. There is no indication from the graph that ice mass will increase in 2020. Given the downward trend, it is more likely that the ice mass will have decreased further by 2030.

Answer:

In 2030 the ice mass will have decreased further.