Answer:
Exposed
Explanation:
When the ice age ended, the glaciers slowly retreated until they reached their current extent limited to the polar regions and alpine mountain climates. The land covered by ice had also been depressed by the weight of the massive glaciers and consequently began to rebound in the centuries following the retreat of the ice sheets. These once frozen lands also turned into large boreal forests with rich ecosystems.
According to one hypothesis, life on earth emerged from (bluegreen algae/ amino acids/ molten metals/ crustal rocks) in the presence of large amounts of gasses seeping from deep ocean vents. ANother process called primordial soup suggests that the formation of life was due to the effects of (lightning/sunlight/gravity/meteorites) in earths atmosphere.
Answer:
Dam and irrigation system and hydroelectric power are used in some countries.In many countries in this region technology has not been able to meet the demand for water.The desalination process is very costly to remove salt from water.
Explanation:
Answer: Communities changed because they wanted newspapers to say how good they are.
Explanation: If news papers say a community is good then more people will move to said community thus making the community more wealthy.
The answer to your question is,
Physical Change.
-Mabel <3
