The document summarizes the eight key characteristics of life: homeostasis, energy use, reproduction, cells, adaptations, response to stimuli, growth and development, and being organized. It provides examples for each characteristic, such as maintaining a stable internal condition like heart rate for homeostasis. Organisms obtain energy through photosynthesis or consuming other organisms. They reproduce through asexual or sexual means and are made up of single or multiple cells. Adaptations allow organisms to survive in their environments. Growth occurs through cell enlargement or division, and development specializes cells for different tasks from the cellular to organism levels.

1. BIOLOGY THE STUDY OF LIFE

13. Organized Molecules Cell Parts Cells Tissues Organs Organ system Organism Cellular Level – All organisms are at least organized to this level