Why is oxygen usually an oxidizing agent?
A) It is a very electronegative element.
B) It does not undergo reduction.
C) It likes to be oxidized.
D) It is very abundant and so it is easier to react than nitrogen.
E) all of the above
Question 2
Why is flooding not an efficient method of irrigation?
A) Most of the water is lost due to run off and evaporation.
B) The water drowns the roots of the plants.
C) Moist soil does not readily absorb any more water.
D) Soil erosion is minimized because the flow of water is very slow.
E) none of the above
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