Answer:
B
Explanation:
pulmonary artery brings the deoxgeneted blood to the lungs where it gets oxygenated and is carried back to the heart via pulmonary vein
The DNA has a double helical structure, which is made up of the molecules known as the nucleotides. Each of these nucleotide molecule is composed of the deoyribose sugar, phosphate group, and a nitrogenous base. The nitrogenous bases are of two types, namely the purines, and pyrimidines. The deoxyribose sugar and the nitrogenous base bonded covalently would be known as nucleoside-nitrogenous base + sugar.
Answer:
The capsid has three functions: 1) it protects the nucleic acid from digestion by enzymes, 2) contains special sites on its surface that allow the virion to attach to a host cell, and 3) provides proteins that enable the virion to penetrate the host cell membrane and, in some cases, to inject the infectious nucleic
Explanation:
Hope this helped you if it did please mark brainliest
(a) erosion
because its done by water to rock