Spheres
Composed of a mixture of gases that surrounds the Earth.
What is the atmosphere?
The percentage of the Earth's surface that is covered in water.
What is 70%?
The elements that make up the Earth's core.
What is iron and nickel?
The gases that make up the atmosphere.
What are nitrogen and oxygen?
All individuals of the same species.
What is a population?
All living things on Earth, including the land, sea and air.
What is the biosphere?
The percentage of Earth's water that is saltwater.
What is 97%?
Coal, natural gas, and oil.
What are examples of fossil fuels?
This is what happens to the density of air molecules as you go higher in the atmosphere.
Why do air molecules decrease?
A group of populations living in the same area at the same time.
What is a community?
The combined mass of all the water found on Earth.
What is the hydrosphere?
The percentage of Earth's water that is freshwater.
What is 3%?
The layer of the atmosphere where all weather occurs.
What is the troposphere?
All different kinds of life found in one place.
What is biodiversity?
All of the rocks, minerals and landforms on Earth.
What is the geosphere?
The percentage of water that is drinking water?
What is less than 1%?
When an animal is at risk of becoming extinct.
What is endangered?