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6. What is a stimulus?
- a change in your environment which you may need to react to
- a change in your body that causes movement
7. Which one is not extinct?
- Homo neanderthalensis
- Homo Sapiens
- Home erectus
8. Hormones are chemically released into the blood?
9. What is Biodiversity?
- the number of plants growing in an area
- the number and variety of organisms found in an area
- the number of humans living at home
10. Detecting stimuli is the job of your .....?
- Nerve cells
- sense organs
- Central Nervous System