An atom has 4 electrons, 4 protons and 4 neutrons. The atom is electrically neutral. Which difference in the properties of protons and electrons affects the electrical neutrality of the atom?
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The bacteria take gaseous nitrogen from the air in the soil and feed this nitrogen in the legumes; in exchange in the plant ☘️ provides carbohydrates to the bacteria . This is why legume cover crops and said to "fix" or provide a certain amount of nitrogen when they are turned under for the next crop or used for compost.
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