False
Nitrogen and sulfur dioxide are acidic oxides in nature. The burning of fossil fuels and other sources are responsible for addition of these oxides in the atmosphere of earth. These oxides mixed with water vapor causes acid rain. Being acidic in nature they will have low pH value. Therefore, greater the concentration of sulfur and nitrogen oxides, will lower the pH value of precipitation.
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The stem of a plant grows_________from the pith. <u>outwards</u> or inwards
The best answer would be enzymes since they are protein molecules and help build it. Enzymes also take part in reaction.
Option C would be correct. The organ system can plays many parts at one time. Also, it is the only system listed.
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