Answer:
D. as an arrangement of four chemical bases
Explanation:
Our DNA is made up of 4 chemical bases (adenine, thymine, guanine, cytosine).
The three most common elements are oxygen, carbon, and hydrogen
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Deep open currents <span>make up 10% of the ocean and are greater than 400 m deep</span>
Plants<span> do not have skeletons, but their shape is defined by the part of the </span>cell<span> called the </span>cell<span> wall. The </span>cell<span> wall is featured only in </span>plant cells<span> and is made of cellulose. Chloroplast: Chloroplast is another big </span>difference between plant<span> and </span><span>human cells. </span>
There are two types of agricultural crop residues<span>. </span>Field residues<span> are materials left in an agricultural field or </span>orchard<span> after the crop has been </span>harvested. These residues include stalks and stubble (stems<span>), </span>leaves<span>, and </span>seed<span> pods. The residue can be ploughed directly into the ground, or </span>burned<span> first. Good management of field residues can increase efficiency of </span>irrigation<span> and control of </span>erosion<span>. </span>Process residues<span> are materials left after the crop is processed into a usable resource. These residues include </span>husks<span>, seeds, </span>bagasse<span>, </span>molasses<span> and </span>roots<span>. They can be used as animal </span>fodder<span> and </span>soil amendment<span>, fertilizers and in </span>manufacturing<span>.</span>
