I'm pretty sure tension is your answer.
Answer:
Sleet is pellets of ice that form when snow falls into a warm layer and melts into rain. The rain then falls into a freezing layer of air that is deep enough to refreeze the raindrops into pellets. Sometimes the snow does not completely melt and the partially melted snowflakes refreeze into snow pellets.:
hope this helps!
Answer:
(d) All of the above, is the correct option
Simply draw a realistic drawing of the DNA, try to add it as much details as possible. You can also use furnitures or recycling items around you if you're making a model, for example...
you could use fuzzballs or marbles for the outside, and perhaps thin construction tubes for the DNA strands?
Maybe twist paper against a pencil for the outside, with a pencil being used as the DNA strands? I sincerely hope this helped!