Diaphragm separates the abdominal cavity from thoracic cavity... :)
i think this is right answer....
A food chain follows one path of energy and materials between species. A food web is more complex and is a whole system of connected food chains. In a food web, organisms are placed into different trophic levels. ... Producers are the basic trophic level while top predators are the peak level.
Oil is non-renewable, the rest are renewable
