1. A change in an organism's surroundings is called a stimulus.
2. An organism can change its behavior to respond to the stimulus.
3. The organism may move away from or toward the stimulus.
4. This helps the organism survive in its environment.
5. For example, a plant grows toward light (phototropism).
6. Animals may migrate to find food or escape harsh weather.
7. Some organisms hibernate during winter to conserve energy.
8. Others develop thick fur to stay warm in cold climates.
9. These adaptations help organisms survive and reproduce.
10. Over time, beneficial adaptations become more common in a population.
Parent Tip: Review the logic above to help your child master the concept of fourth grade science worksheet.
