What is the connection between ape laughter and human laughter?

• They developed in completely different ways.
  
  

• They developed in the same way many millions of years ago.

• Ape laughter is more melodic than human laughter.

• 
  Human laughter developed from speech, while ape laughter did not.

Which word from the passage indicates a comparison/contrast?

• because

• although

• however

• but

What is the main idea of the passage?

• Apes and humans do not share any similarities in laughter.
  

• Scientists have discovered that apes laugh, and their laughter is both similar to and different from human laughter.

• Orangutans and chimpanzees laugh the same way humans do

• Human laughter is more advanced than ape laughter.

What is the best summary of the passage?
A. Scientists
B. learned that only chimpanzees and humans share the ability to laugh on the inhale and exhale.
C.
D.

• Apes cannot laugh like humans, but they make sounds when tickled.

• Scientists learned that only chimpanzees and humans share the ability to laugh on the inhale and exhale.

• Research shows that apes laugh in ways that are similar to human laughter, although the sounds are different, and this discovery shows humans have more in common with apes than once believed.

• Human laughter developed more recently than ape laughter.

How are orangutan laughter and human laughter different?

• Orangutan laughter sounds melodic, while human laughter is panting.

• Orangutan laughter is a series of quick snorts, while human laughter often sounds more melodic.

• Orangutan laughter involves inhaling and exhaling, while human laughter only involves exhaling.

• Orangutans laugh louder than humans.

Which word from the passage suggests a contrast?

• because
  

• but

• simply

• similar

What is one difference between chimpanzee laughter and human laughter in the passage?

• Chimpanzees laugh only on the exhale, while humans laugh on both inhale and exhale.

• Chimpanzees laugh only on the inhale, while humans laugh only on the exhale.

• Chimpanzees laugh on both inhale and exhale, while humans laugh only on the exhale.

• Chimpanzees do not laugh at all, while humans do.

How is the passage mostly organized?

• Problem and solution
  
  
  

• Cause and effect

• Compare and contrast

• Chronological order

Which detail best supports the main idea?

• “Orangutan laughter is a series of quick snorts.”
  
  

• “Scientists have traditionally been unwilling to identify the noises apes make as laughter, but research now suggests that they have been wrong.”

• “Humans, gorillas, and bonobos laugh only on the exhale.”

• "It takes longer than usual to exhale while laughing.”

What does the word melodic most likely mean as it is used in the sentence?

• Musical or pleasant sounding
  

• Deep and rough

• Similar to crying

• Loud and noisy