Fill in the blanks to complete each statement about continental drift. Continental drift was first proposed by a scientist named Alfred . He theorized that the were once one large landmass that drifted apart very slowly over a long time.

climate change and pollution

most community's take hundreds of years to become stable

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.