Answer:
DNA nucleotides:
DNA is present as genetic material in all organism except some virus. The nucleotide of DNA consists of the nitrogenous base. The bases of DNA are adenine, guanine, thymine and cytosine. The phosphate group and deoxyribose pentose sugar is present in the DNA nucleotides.
RNA nucleotides:
RNA is present as genetic material in some viruses only. The nucleotide of RNA consists of nitrogenous bases are adenine, guanine, cytosine and uracil. The phosphate group and oxyribose pentose sugar is present in the nucleotide of RNA.
Answer: Protects skin from damage.
<span>The integumentary system comprises the skin and its appendages acting to protect the body from various kinds of damage, such as loss of water or abrasion from outside. The integumentary system includes hair, scales, feathers, hooves, and nails.</span>
First law is Law of Conservation of Energy it states that enegy cant be made in a isolated system. The second law is Law of Thermodynamics it states that the entropy of any isolated system always increases.
D,record observations and measurements.
Sometimes they're used as drugs. The classic example might be penicillin, a compound made by a fungus and used as the first widely-available antibiotic.
