All of the choices in some ways gave rise to the early civilizations. Mountains helped India to be protected from China, the ocean helped for food, the Sahara desert protected lower Africa from invasion for many centuries. Rivers also helped since they were a major trade routes and the most fertile soil. I think that the Rivers were the most important geographic feature. So the correct answer is C.
Answer:
C. Nucleic Acids arranged in a double helix.
Explanation:
The structure of DNA is best described as a double helix. DNA has a sugar phosphate back and nucleotides connected by covalent bonds. Together, it looks like a twisted ladder which is also known the double helix.
Yeah this statement is true
C. Speedometer
Explanation: Hope this helps but a speedometer does in fact let you know how fast your vehicle is going.
