RNA stands for ribonucleic acid which is one type of nucleic acids. So nucleic acid has RNA.
<h2>Answer </h2>
Moss
<u>Explanation</u>
Moss is often used as a soil conditioner. The capacity of Sphagnum to keep damp creates the moss a common soil conditioner. A soil conditioner is a material manufactured from organic matter which assists to enhance the soil's characteristics, scoring slow-releasing nutrients. It has been simply used to kill any weed seeds. Mosses are small flowerless plants that typically develop in thick green clumps or mats usually in damp or dark areas.
The vas deferens<span> is a long, muscular tube that travels from the epididymis into the pelvic cavity, to just behind the bladder. The </span>vas deferens<span>transports mature sperm to the urethra in preparation for ejaculation. Hope this is correct!</span>
Answer:
c. In mines or confined places, where oxygen levels have been depleted, ventilation may occur.
Explanation:
Environments classified as “confined space” are hazardous for several reasons, but one of the main ones is the low oxygen concentration. Normally atmospheric air contains a 21% concentration of oxygen that is necessary for the maintenance of human life. Some confined spaces have this concentration of less than 21% oxygen, which can be very harmful to human life and lead to death.
Low oxygen concentration can be masked by ventilation in confined places. This is because in confined places oxygen levels may be low, but ventilation may continue despite inadequate oxygenation.
