Answer:
C. Elongation.
Explanation:
The RNA strand "elongates" due to the addition of new nucleotides
The tundra has trees, some grasses, large animals, and is usually cold. The desert on the other hand, Is usually hot, and has less animal and plant life. Deserts can be cold in some places though.
Can you elaborate ?????????????????????????
i believe it's <u>B. An atom of iron</u>