I feel, only plants are play a role as producer rather then bird,animal and humanbeing, because it give us fruits, cereals, nuts and also we consume hole plant as vegetable.Actually the main plants role is to produce oxygen by consuming carbon dioxcide were the animal,bird and human are release to air.Tree's and plants by all the time, do good deed for other kingdom.
Usually, most medicine will contain plants as ingredient. Plants also treat the air polution made by humanbeing, technolgy and natural disasters.Plants also be wood as cooking and shelter the olden days.
I wonder why human never appriciate the plant kingdom but we destroy them. When the plants are destroyed for developments and other human activities, the global become warmer then we are facing alot of natural disasters as sudden flood, thick snow and less rain fall were the agriculture as water problems.
One day, all we think isgoing to face food problems, no, but we will face air(oxygen %) quality problems, were will have lesser oxygen in air and more air pollutants which cause alot disease and lung cancer.
