Threatened is the definition used when describing a species at risk of extinction
Plants would be the only option, they have no legs so they can't move. They are producers and make its own food and unable to move around its environment.
<span>They are considered accessory glands of the digestive system because they only send digestive juices and acids to the main digestive organs. Food does not actually enter any of the accessory organs.</span>
The organisms that create all the usable food energy on Earth are called the producers. These organisms are able to produce food through the different resources such as the energy from the Sun, the carbon dioxide, and water and minerals that they absorb from the soil
