Which of the following is an obstacle to creating computer-based models for tracking a hurricane?

1. hurricanes form over water, where it is difficult to observe them.
2. most sources of data about hurricanes are anecdotal and unreliable.
3. forecasters must consider a large number of variables that affect the path of the storm.
4. all of the above

4. All of the above I think, not to sure about 1. but the rest are right so im like 90.99999 percent sure good luck

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

answer: electrons