Identify which process you would use to separate the following mixtures ___
Sand and Water

_
Grades of gasoline that have differing boiling points

_
Blend of two oils with freezing points of 15 degree Celsius and -5 degree Celsius

___
Pigments in a dye

1.
Distillation

2.
Chromatography

3.
Freezing

4.
Filtration

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.