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91. Life generates methane, ammonia, oxygen, hydrogen, carbon dioxide, and many other gases.

92. Additionally, carbon dioxide is produced as a result of continued metabolism.

93. Molecules of carbon dioxide in the solid phase are packed more closely than in the liquid phase.

94. Nox, together with sulphur dioxide, is one of the leading contributors to acid rain pollution.

95. It is usually caused by the emission of particulates or nitrogen dioxide.

96. As levels of atmospheric carbon dioxide and methane increase, the greenhouse effect will trap increasing amounts of heat.

97. Rainforests absorb carbon dioxide and produce the oxygen essential for all life, including our own.

98. The biggest growth in carbon dioxide emissions, implicated in the major problem confronting humanity's survival, is from road transport.

99. Government officials have acknowledged that existing policies to limit acidic emissions - notably of sulphur dioxide - are inadequate.

100. The sulphur dioxide level in Belfast was 32 parts per billion while the nitrogen dioxide level was 48.

101. The gas is cleaned prior to burning and the sulphur dioxide and nitrogen dioxide, thought to contribute to acid rain, removed.

102. That harmlessly releases 600 litres of carbon dioxide into the air every second.

103. They were keen to combat acid rain,(www.Sentencedict.com) freeze carbon dioxide emissions and improve public transport.

104. Sulphur dioxide emissions would also increase if that strategy were implemented.

105. Speeding up urban traffic could save 10 percent of fuel, and so cut back on carbon dioxide.

106. Its composition obviates the need for sulphur-removing equipment in power stations, which produce additional carbon dioxide.

107. Care must be taken to ensure plants are obtained from a sustainable source Reduction of carbon dioxide in the atmosphere.

108. One way of absorbing the extra carbon dioxide would be to plant more trees.

109. Implementing the directive across the 12 member states would save an estimated 26 million tonnes of carbon dioxide emissions a year.

110. The forecast is not entirely gloomy. Crop yields will improve dramatically as vegetation thrives on an atmosphere rich in carbon dioxide.

111. The high-temperature electrolysis scheme that we explored in connection with a lunar base can separate carbon dioxide into oxygen and carbon monoxide.

112. Which is rated as most dangerous, carbon dioxide or nuclear power?

113. The result has been a halving of sulphur dioxide emissions in the flue gases..

114. Gas is environmentally helpful in achieving the Government's target of stabilising carbon dioxide emissions at 1990 levels by the year 2005.

115. This stipulates that emissions of sulphur dioxide must be cut to 10 million tonnes below 1980 levels by the year 2000.

116. Estimating the future rate of energy growth is of critical importance for predicting future concentration of atmospheric carbon dioxide.

117. This surface reaction of oxygen and carbon releases carbon monoxide which migrates outward and upon encountering oxygen burns to carbon dioxide.

118. When we breathe we take oxygen into the body and expel the waste gas, carbon dioxide, or CO2.

119. Carbon dioxide is added to the water by the respiration of fish, plants, and other living organisms.

120. The government is committed to reducing sulphur dioxide emissions by 60 percent to their 1980 levels by 2005.