Across
- 4. the ability to produce offsprings
- 6. modifications of an organism to live in certain environmental conditions
- 7. the process of taking in food and converting it into energy
Down
- 1. the chemical process of taking in oxygen to produce energy
- 2. increase in the number or size of cells in an organism
- 3. the change in one position to another of an organism
- 5. the process of living things being able to sense things around them and respond to it