adverbial phrase

A large quantity.

Example: There was a great deal of fluctuation within this fall.

noun

The envelope of gases surrounding the earth or another planet.

Example: There were always higher levels of sulphur dioxide than smoke in the atmosphere.

noun

Cubic meter (in American English) is the SI derived unit of volume.

Example: It measures smoke and sulphur dioxide in micrograms per cubic metre.

noun

An irregular rising and falling in number or amount; a variation.

Example: Over the next two hundred years, the levels of sulphur dioxide continued to increase, although there was some fluctuation in this trend.

noun

A position on a scale of amount, quantity, extent, or quality.

Example: There were always higher levels of sulphur dioxide than smoke in the atmosphere.

verb

Ascertain the size, amount, or degree of (something) by using an instrument or device marked in standard units.

Example: It measures smoke and sulphur dioxide in micrograms per cubic metre.

noun

A model or design used as a guide in needlework and other crafts.

Example: The levels of both pollutants formed a similar pattern during this period.

noun

A substance that pollutes something, especially water or the atmosphere.

Example: The levels of both pollutants formed a similar pattern during this period.

noun

The presence in or introduction into the environment of a substance which has harmful or poisonous effects.

Example: The graph shows pollution levels in London between 1600 and 2000.

adverb

With a sudden, piercing physical sensation or effect; intensely.

Example: Smoke levels increased a little more sharply during this time.

noun

A visible suspension of carbon or other particles in the air, typically one emitted from a burning substance.

Example: There were always higher levels of sulphur dioxide than smoke in the atmosphere.

noun

A colourless pungent toxic gas formed by burning sulphur in air.

Example: Over the next two hundred years, the levels of sulphur dioxide continued to increase.

adverbial phrase

A large quantity.

Example: There was a great deal of fluctuation within this fall.

noun

The envelope of gases surrounding the earth or another planet.

Example: There were always higher levels of sulphur dioxide than smoke in the atmosphere.

noun

Cubic meter (in American English) is the SI derived unit of volume.

Example: It measures smoke and sulphur dioxide in micrograms per cubic metre.

noun

An irregular rising and falling in number or amount; a variation.

Example: Over the next two hundred years, the levels of sulphur dioxide continued to increase, although there was some fluctuation in this trend.

noun

A position on a scale of amount, quantity, extent, or quality.

Example: There were always higher levels of sulphur dioxide than smoke in the atmosphere.

verb

Ascertain the size, amount, or degree of (something) by using an instrument or device marked in standard units.

Example: It measures smoke and sulphur dioxide in micrograms per cubic metre.

noun

A model or design used as a guide in needlework and other crafts.

Example: The levels of both pollutants formed a similar pattern during this period.

noun

A substance that pollutes something, especially water or the atmosphere.

Example: The levels of both pollutants formed a similar pattern during this period.

noun

The presence in or introduction into the environment of a substance which has harmful or poisonous effects.

Example: The graph shows pollution levels in London between 1600 and 2000.

adverb

With a sudden, piercing physical sensation or effect; intensely.

Example: Smoke levels increased a little more sharply during this time.

noun

A visible suspension of carbon or other particles in the air, typically one emitted from a burning substance.

Example: There were always higher levels of sulphur dioxide than smoke in the atmosphere.

noun

A colourless pungent toxic gas formed by burning sulphur in air.

Example: Over the next two hundred years, the levels of sulphur dioxide continued to increase.

adverbial phrase

A large quantity.

Example: There was a great deal of fluctuation within this fall.

noun

The envelope of gases surrounding the earth or another planet.

Example: There were always higher levels of sulphur dioxide than smoke in the atmosphere.

noun

Cubic meter (in American English) is the SI derived unit of volume.

Example: It measures smoke and sulphur dioxide in micrograms per cubic metre.

noun

An irregular rising and falling in number or amount; a variation.

Example: Over the next two hundred years, the levels of sulphur dioxide continued to increase, although there was some fluctuation in this trend.

noun

A position on a scale of amount, quantity, extent, or quality.

Example: There were always higher levels of sulphur dioxide than smoke in the atmosphere.

verb

Ascertain the size, amount, or degree of (something) by using an instrument or device marked in standard units.

Example: It measures smoke and sulphur dioxide in micrograms per cubic metre.

noun

A model or design used as a guide in needlework and other crafts.

Example: The levels of both pollutants formed a similar pattern during this period.

noun

A substance that pollutes something, especially water or the atmosphere.

Example: The levels of both pollutants formed a similar pattern during this period.

noun

The presence in or introduction into the environment of a substance which has harmful or poisonous effects.

Example: The graph shows pollution levels in London between 1600 and 2000.

adverb

With a sudden, piercing physical sensation or effect; intensely.

Example: Smoke levels increased a little more sharply during this time.

noun

A visible suspension of carbon or other particles in the air, typically one emitted from a burning substance.

Example: There were always higher levels of sulphur dioxide than smoke in the atmosphere.

noun

A colourless pungent toxic gas formed by burning sulphur in air.

Example: Over the next two hundred years, the levels of sulphur dioxide continued to increase.