Chlorine because it lacks one valence electron to fill it's outer shell
The proximate reason for the uptake by plants of nutrients like ammonium nitrate is homeostatis
<h3>
What is homeostasis?</h3>
Homeostasis refers to an organism's ability to regulate various physiological processes to keep internal states steady and balanced.
<h3>How does plant perform homeostatis?</h3>
As water leaves the plant tissues into the atmosphere, it takes energy with it in the form of heat.
Much like when we sweat, this allows the plant to cool and maintain homeostasis.
Similarly, the same process allows plants to absorb nutrient like ammonium nitrate.
Thus, the proximate reason for the uptake by plants of nutrients like ammonium nitrate is homeostatis.
Learn more about homeostatis here: brainly.com/question/1046675
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