Plants and animals. I hope that helped!
Explanation:
Brownfields are unused urban spaces, usually defined by their previous industrial use and therefore might have soil contamination but not necessarily. Their shared characteristics are that they no longer serve the intended purpose (eg. Factory gone bankrupt), are abandoned or at leasr under used, contain(ed) buildings, might be contaminated, requite outside help to be revitalised.
Question : When soil lacks nutrients needed for crop growth, farmers might add __________ to the topsoil to promote the growth of crops.
Logical answer : Fertilizer
Answer:
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<span>I suspect that the answer is at the surface of the open ocean. This is where the evaporation of water takes place which concentrates the salts at the very surface. However, with any significant mixing, the effect might not be measureable. Nevertheless, the surface tension of the water at the surface would tend to stabilize the very surface slowing down mixing with more dilute water just beneath the surface.</span>
