From the provided text about the effects of chronic exposure to cosmic radiation on plants, the keywords and key phrases can be listed as:
- Cosmic radiation
- High-energy, charged particles
- DNA Damage
- Mutations
- Cell Damage
- Cell membranes
- Mitochondria
- Chloroplasts
- Growth and Development
- Altered Growth
- Reproduction
- Stress Response
- Radiation Resistance
- Biological Shielding
- Space Exploration
- Sustainable life support systems
- Space missions
- Extraterrestrial colonization
These keywords and phrases encapsulate the primary themes and concepts discussed in the text.
