1. Firstborn children have higher IQ scores than their younger siblings.

2. All blue-eyed people have a common ancestor.

3. The visible spectrum that humans can see is vast.

4. Certain people are more accident-prone than others.

5. Hair helps us hear.

6. Humans require pure oxygen to breathe.

7. Usually, children need more calories than adults.

8. Humans use electricity when they think.