the warming trend over the last 50 years (about 0.13° C or 0.23° F per decade) is nearly twice that for the last 100 years. The average amount of water vapor in the atmosphere has increased since at least the 1980s over land and ocean. and one more
If the world temperature rises by two degrees, mountain glaciers and rivers will start to disappear and mountainous regions will see more landslides, as the permafrost that held them together melts away. By 2100, sea levels could rise by a meter, displacing 10% of the world's population.
Global warming is projected to have a number of effects on the oceans. Ongoing effects include rising sea levels due to thermal expansion and melting of glaciers and ice sheets, and warming of the ocean surface, leading to increased temperature stratification.
The amount of silica found in the magma determines the viscosity. The higher the silica in magma, the higher the viscosity of a magma. So the correct answer is silica. It is not among the other choices.
