Biosphere Commun Anything that can perform life processes by itself is what level of biological organization? A Organ B. Organ System C. Organism D. Tissue Which level of biological organizations is part of the earth that contains the entire ecosystem? A Biosphere B. Community C. Ecosystem D. Population D. Liver Which of the following is an example of an organ system? A Brain B. Digestive C. Human skin cells Leo's father was hospitalized due to chest pain and difficulty of breath Laboratory examination revealed increased cholesterol in blood. Which or system is mostly affected? 1. Circulatory system C Digestive system 3. Excretory system D. Nervous system Which is the CORRECT sequence from largest to smallest of the les rganization in an organism? Biosphere, ecosystem, community, population, organism, organs organ, tissue, cell, molecule tem, organism, organ