Obesity is the condition of being grossly fat or overweight, and the most common tool to diagnose it is BMI, the Body Mass Index.
Call 911, give clear directions on how to locate you, stay calm. Since it is a busy park, call out for help. If someone is near you, ask for help. Keep trying. If you hear EMS, call out or ask someone to point where you are.
ALWAYS stay on the phone with 911 until EMS arrives. Describe different landmarks near you.
This scenario assumes you have a cell phone.
The words you are looking for are complex and large.
Complex carbohydrates like those of these plants usually belong to two types; Starch and Fiber. These complex carbohydrates are meant to store energy for the plant in case of periods of little production of simple energy forming carbohydrates like Sucrose and Fructose. Because of the complex nature of these molecules, it takes a while to break them down (Fiber is especially difficult as humans do not have the specific stomach flora and enzymes to break it down).