Across
- 2. The digestive and circulatory systems work together to transport _______ throughout the body.
- 3. The concept of "descent with modification" explains that lions and house cats share common _______.
- 6. The respiratory system supplies the circulatory system with _______ for the body.
- 8. Camouflage helps animals survive by allowing them to _______ from predators
- 9. Environmental resistance, like limited food and predators, _______ the growth of a population.
- 10. Reproduction is important for the _______ of a species.
Down
- 1. Natural selection helps species evolve by promoting traits that improve _______.
- 4. If a rabbit population has high biotic potential and no predators, it may lead to _______.
- 5. Scientists classify organisms like mammals, reptiles, and birds to better _______ and understand life.
- 7. Genetic engineering can make crops more resistant to pests by providing them with _______.