The three most common elements are oxygen, carbon, and hydrogen
Answer: <u>Option C
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<u>Explanation</u>: Hills are the most common source of sediments because they lack vegetation. Plants and trees hold the soil and thus prevent erosion of soil layer with water. The sediments from the hilly areas get carried by rain water or runoff, and add to the water bodies, like lakes and streams.
Waste from mining industries don’t have sediments in their waste, so option B is incorrect.
Option A is incorrect because over-irrigation will not affect the soil layer, as it is firmly held by the roots of the crops.
The ways in which an element—or compound such as water—moves between its various living and nonliving forms and locations in the biosphere is called a biogeochemical cycle. Biogeochemical cycles important to living organisms include the water, carbon, nitrogen, phosphorus, and sulfur cycles.
The answer is B.
The kinetic energy of an object depends on <span>the object’s speed and mass. By definition, kinetic energy is produced only when an object is in motion.
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The answer is C
Nucleic Acids
