WONDER #2630: How Is the Human Body Like Planet Earth?

Question 1 of 3

Which is NOT a way the human body is like planet Earth?

  1. They both rely on systems to support life.
  2. They both contain high levels of sulfur.
  3. They are both made of mostly water.
  4. They are both diverse ecosystems.

Question 2 of 3

Which element accounts for more weight than any other in both the human body and planet Earth?

  1. Oxygen
  2. Carbon
  3. Silver
  4. Krypton

Question 3 of 3

Experts say that about _____ percent of the cells in the body are not human.

  1. 10
  2. 35
  3. 90
  4. 75

Check your answers online at https://www.wonderopolis.org/wonder/How-Is-the-Human-Body-Like-Planet-Earth.