Scientists have hypothesized that giraffes with longer necks are better equipped to survive during a drought than those giraffes with short necks. the independent variable is

Neck size

Explanation:

The independent variable can be defined as the factor that can be controlled and it is variable.

The dependent variable depends on the independent variable. The independent variable is changed in order to get the result of the experiment.

here, the variation in the size of neck is independent variable and the rate of survival is dependent variable.

The independent variable is neck size.

i would have a lunch. it's one big package of food, making it one food. : p