Choose the type of graphical display that best fits each type of data. The data is a percent that sums to 100% or total amount of time.

Both independent and dependent variables are quantitative.

The independent variable measures are continuous, such as time in years.

The independent variable measures are grouped, such as “0–5 years” and “6–10 years.”

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.