Clearing land is not a sustainable practice in any form, so not A. Crop rotation is important for maintaining soil fertility, but is not necessarily sustainable. It's definitely not C. It is likely D because using only renewable resources is top notch sustainability.
Some of the tools that scientist might use to study a sinkhole first of all is some of there five scenes like using there eyes to observe rock and soil they might use there nose to pick up gaseous orders and there ears to hear how the earth shifts
A it helps them classify stars because it groups based on temperature and brightness.
Answer:
Nitrifying bacteria such as Nitrosomonas play an important role in providing nitrogen to plants and limiting carbon dioxide fixation. They are found widely distributed in soil or water, where there are large amounts of ammonia, such as lakes or streams into which treated and untreated sewage is pumped.
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