What percentage of the human body is water?

• A.50%

• B.66%

• C.75%

• D.80%

A human's thumb is as long as his or her nose.

• A.True

• B.False

Speaking of humans, there are about __________________ of us in the U.S. right now.

• A. 100 million

• B. 300 million

• C. 700 million

• D. 1 billion

Tags

NGSS.MS-ESS3-4

A sneeze occurs at about 100 miles an hour.

• A. True

• B. False

What is one of the parts in the Circulatory System?

• a) heart

• b) skin

• c) bones

What part of the Circulatory System is a tube?

• a) blood vessels

• b) heart

• c) blood

Where do the chemicals to break down the food in your small intestine come from?

• a) heart and liver

• b) pancreas and liver

• c) liver and mouth

Tags

NGSS.MS-LS1-7

Which of these parts belong in the digestive system?

• a) heart

• b) esophagus

• c) blood vessels

What are one of the chemicals that break down food in the stomach?

• a) the brain

• b) the liver

• c) enzymes

Tags

NGSS.MS-LS1-7

What is the last part of the digestive system?

• a) stomach

• b) esophagus

• c) large intestine