Answer:
C.) castings
Explanation:
Worm castings are a biologically active mixture of bacteria, enzymes, plant materials and animal dung leftovers, as well as earthworm cocoons. When worms digest food or other materials, complex nutrients are broken down into more accessible forms than those present in the castings. I hope this helps! ^-^
No, because “free” nitrogen is not combined with other kinds of atoms.
Most organisms can use nitrogen only once it has been "fixed" or combined with other elements to form nitrogen-containing compounds.
Answer:
C. when a portion of the moon passes through the earth's umbral shadow.
Explanation:
A partial lunar eclipse occurs when the Earth passes between the sun and moon but the celestial bodies are not arranged in a straight line. When that occurs, a small part of the moon's surface is covered by the darkest, central part of the shadow of the Earth called the umbra. The rest is covered by the outer part of the shadow, termed penumbra.
Further explanation
<em>Recombinant </em>DNA or rDNA is a form of artificial DNA that is made by combining or combining two or more strands of DNA strands that are normally unpaired or occur together. On the subject of molecular biology, genetic modification is carried out by inserting relevant DNA into the DNA of living organisms, for example in bacterial plasmids, to encode a particular characteristic such as antibiotics and other traits. This is different from the concept of recombinant DNA in which the combination of DNA does not occur naturally in cells but is engineered. DNA recombination process that is commonly done is by combining DNA strands from two different organisms. The joining of two DNAs from different organisms, for example in a bacterial plasmid, is assisted by the enzyme ligase. Recombinant DNA technology through DNA cutting techniques is one time reinforcing evidence that shows that DNA is a unit of inheritance.
The discovery of recombinant DNA technology has made genetic engineering analysis and development increasingly developed, especially in fields that have long practiced genetic modeling and analysis such as medicine, agriculture, and industry. Gene transfer between organisms today can be carried out even between organisms that were biologically formerly unable to join. The gene transfer process that conventionally uses sexual reproduction ie crossing can be avoided, for example in the production of "Bt" maize, one of which is composed of bacterial genes that are transferred to corn plants to make corn resistant to borer pests in Europe. Molecular markers are available to make the selection process more effective and efficient.
In the world of health, the first commercial product produced with recombinant DNA technology is insulin. This insulin research and project began before government regulations and policies regarding the widespread and commercial use of recombinant DNA were made. As basic research on recombinant DNA technology continues to seek efficiency and benefits for humanity, the commercial use of products produced from this technology is controlled by market behavior and investment capital provided.
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Recombinant DNA : brainly.com/question/2731646
Details
Class: high school
Subject: biology
Keywords : Recombinant, genetics, product, technology, organism