science
Grade-4-
Easy

Question

________ is something that causes change in an environment.

  1. Stimulus

  2. Adaptation

  3. Behavior

  4. Growth

hintHint:

Physical or chemical change. Functional activity can be observed.

The correct answer is:

Stimulus


    The correct answer is a) stimulus.
    Stimulus is a physical/chemical change that can be detected. This change occurs in the environment of a living being which results in functional activity. For example: For sunflowers, the sunlight acts as a stimulus as they face the sun.