...the DNA molecule that packaged into thread-like structures. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
The answer is c because if you treat the sewage water than you that means that the water will be clean so it prevents diseases
The answer is none of the above because organic materials, gasses, and minerals are all component soils.
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Primary succession starts with bare rock which is broken down by either lichen or moss to make soil while secondary succession starts with developed soil