Too much of this would make it hard for birds to fly.
Earth's gravity
Earth is the only planet to have this and it covers 3/4 of its surface.
Liquid water
The study of the earth.
Geology
The boundary between the crust and the mantle?
Moho
A resource that is living, such as trees, plants, fish, and wildlife.
Biological natural resource
A 23-1/2 degree angle.
The earth's tilt
This is made of clear, colorless gases.
Earth's atmosphere
The belief that the earth-forming processes are natural, have always been the same, and happened at a gradual rate.
Uniformitarianism
The outer or surface layer of the earth.
The crust
A non-living natural resource such as soil, rocks, minerals, and water.
Non-biological natural resource?
What is unique about our moon?
It is 100 times larger than the average moon
This helps protect the earth from harmful energetic radiation that would reach the earth from outer space.
Earth's magnetic field
The viewpoint that the earth is billions of years old.
Deep-time view
This layer makes up 84% of the earth's volume.
Mantle
Reusing resources that would normally become trash.
Recycling
The area of Earth's orbit that allows for the right amount of sunlight, water to be liquid, and carbon dioxide to be in a gas.
Habitability zone
The fact that we are located in one of the spiral arms of this makes it a good location for earth and our solar system.
The Milky Way
This theory states that the continents were once one giant land mass that separated and floated away to their present location.
Plate tectonics theory
This is formed by the crust and the upper mantle.
Lithosphere
The addition of anything to a resource that reduces its usefulness.
Pollution
The speed of this is designed for life; too slow many organisms would not survive the long hot days.
Earth's rotation
Which planet's gravity is most responsible for keeping asteroids away from the Earth?
Jupiter
The study of presently occurring scientific events.
Operational Science
The area just below the lithosphere that is responsible for plate tectonic movement.
Athenosphere
The effort to oversee and control the use of natural resources and is a wise dominion of God's creation.
Resource management