Which of the following best describes the shape of a dna molecule?
a. two strands of nucleotides bonded together at their bases,
twisting to form a double helix
b. a single strand of nucleotides bonded together and twisted,
forming a sphere
c. a single strand of nucleotides bonded together, forming a long
chain
d. two strands of nucleotides bonded together at their bases,
forming a flat ribbon

The table presents the average day and night temperatures in five cities. it also reveals whether a city receives substantial rainfall (wet climate) or little rainfall (dry climate). which city’s rocks are likeliest to experience frost wedging, and why? a) city a because the consistently subzero temperature would prevent water from melting b) city b because it is a wet region and the temperature fluctuates around the freezing point c) city c because it receives plenty of rain fall and the weather is moderately cool d) city d because the hot and dry weather would cause rocks to absorb water