the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.

the remains or impression of a modern organism preserved in petrified form or as a mold or cast in rock.

the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in water.

Mr Williamson

a theory in geology: the lithosphere of the earth is divided into a small number of plates which float on and travel independently over the mantle and much of the earth's seismic activity occurs at the boundaries of these plates.

a theory in geology: the lithosphere of the earth is made up of a small number of plates which float on and travel independently over the mantle and much of the earth's seismic activity occurs at the boundaries of these plates.

a theory in geology: the lithosphere of the earth is divided into a small number of plates which float on anctivity occurs at the boundaries of these plates.

Mr Williamson

relating to the study of the earths inner structure and substance.

relating to the study of the earth's physical structure and substance.

relating to the stady of the earth's physical structure and substance.

Mr Williamson

A diagram that shows what the inside of something looks like

A diagram that shows what thie inside of something looks like

A diagram that shows what thet outside of something looks like

Mr Williamson

core sample is a cylindrical section of a naturally occurring substance

A core sample is a square section of a naturally occurring substance.

A core sample is a cylindrical section of a naturally occurring substance.

Mr Wiliamson

large scale processes affecting the structure of the earth's crust.

large-scale processes affecting the structure of the earth's crust.

large-scale processes afecting the structure of the earth's crust.

Mr Williamson

an extinct small aquatic reptile of the early Permian period, with an elongated body, flattened tail, and a long narrow snout with numerous needlelike teeth.

an extinct small aquatic reptile of the early Permian period with an elongated body, flattened tail, and a long narrow snout with numerous needlelike teeth

an extinct small aquatic reptile of the early Permian period, with an elongated body, fl hi attened tail, and a long narrow snout with numerous needlelike teeth.

Mr Williamson

(of lines) tend to meet at a point.

(of lines) tend to meet at an point.

of lines tend to meet at a point.

Mr Williamson

separate from another route, especially a main one. and go in a different direction.

separate from an other route, especially a main one, and go in a different direction.

separate from another route, especially a main one, and go in a different direction.

Mr Williamson

make a thorough or dramatic change in the form, appearance, or character of.

make a thorough or dramatic change in the farm, appearance, or character of.

make a thorough or dramatIc change in the form, appearance, or character of.

Mr Williamson

the geological processes, such as tectonic plate movement and volcanic activity, by which mountains are formed.

the geological processes, such as tectonic plate movement and volcanic activity, by which mountains are formed.

the geological processes such as tectonic plate movement and volcanic activity by which mountains are formed

Mr Williamosn

the mideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.

the sideways and upward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.

the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.

Mr Williamson

volcanic activity or phenomena.

volcanic activity and phenomena.

volcanic activit or phenomena.

Mr Williamson

a long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with bottomfloor spreading. An example is the Mid-Atlantic Ridge

a long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with seafloor spreading. An example is the Mid-Atlantic Ridge

a long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with sea hi floor spreading. An example is the Mid-Atlantic Ridge

Mr Williamson

a line that marks the limits of an area a dividing line.

a line that marks the limits of an area a dividing line.

a line that marks the limits of an area; a dividing line.

Mr Williamson

a theory in geology: the lithosphere of the earth is divided into a small number of plates which float on and travel independently over the mantle and much of the earth's seismic activity occurs at the boundaries of these plates.

a theory in geology: the lithosphere of the earth is divided into a small number of plates which float on and travel independently over the mantle and much of the earth's seismic activity occurs at the boundaries of these plates.

a theory in geology: the lithosphere of the earth is divided into a small number of plates which float on and travel independently over the mantle and much of the earth's seismic activity occurs at the boundaries of these plates.

Mr Williamson

An oceanic plate is a tectonic plate at the bottom of the oceans. The Earth's rocky outer layer turned into solid billions of years ago, soon after the Earth formed. ... The Earth's crust lies on top of the plates - the continental crust - the relatively thick part of the earth's crust which forms the large land masses.

An oceanic plate is a tectonic plate at the bottom of the oceans. The Earth's rocky outer layer turned into solid billions of years ago, soon after the Earth formed. .. The Earth's crust lies on top of the plates - the continental crust - the relatively thick part of the earth's crust which forms the large land masses.

An oceanic plate is a tectonic plate at the bottom of the oceans. The Earth's rocky outer layer turned into solid billions of years ago, soon after the Earth formed. ... The Earth's crust Iies on top of the plates - the continental crust - the relatively thick part of the earth's crust which forms the large land masses.

Mr Williamson