Which level of organization does the complete skeleton of a mouse belong to?
a. cell
b. tissue
c. organ
d. organ system

Answer;

D. organ system

Explanation;

-Living things are highly organized and structured, following a hierarchy that can be put on a scale from small to large. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

-Cells are organized into tissues, and tissues form organs. Organs are organized into organ systems such as the skeletal and muscular systems