The number of Earth systems
What is four
The relatively no air in this outermost layer of the atmosphere.
What is Exosphere
This layer of the atmosphere protect us from the UV rays and is located in the stratosphere
What is ozone layer
The branch of earth science that studies the all living creatures.
What is biology?
Oceans and seas is a source of this water
What is saltwater
The branch that studies all water on Earth
What is hydrology
The branch that studies the air and gasses on earth
What is aerology
Free Clue
What is you get 400 points :)
Stratosphere, Mesosphere, and Thermosphere. These layer protect us from the result of the sun's ray
What is UV radiation
This layer of the Earth is plasma metal sphere that behaves like a solid
What is inner core
Rivers, Ponds, Streams, Lakes, and Glaciers are sources of this water
What is freshwater
This is Mr. Labbe's favorite color?
What is blue