Secretive and wary, weasels are difficult to study in. nature, and many gaps remain in our knowledge of their. reproduction. Two of the species covered in this Wild-. life Note (the ermine and the long-tailed weasel) exhibit.
Extensive - Properties that do depend on the amount of matter present. Mass - A measurement of the amount of matter in a object (grams). Weight - A measurement of the gravitational force of attraction of the earth acting on an object. Volume - A measurement of the amount of space a substance occupies. Length.
Herbivores, omnivores, and carnivores. Definition. An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide. Heterotrophs cannot produce organic compounds from inorganic sources and therefore rely on consuming other organisms in the food chain.