Which organ in the human body is responsible for pumping blood?

(a)  

What is the pigment that gives plants their green color and helps them with photosynthesis?

(a)  

What is the largest mammal on Earth?

(a)  

On average, how many bones are in the adult human body?

(a)  

What is the process called when a solid turns into a liquid?

(a)  

What is the process called when a gas turns into a liquid?

(a)  

What is the unit of measurement for power?

(a)  

What is the study of Earth’s atmosphere and weather called?

(a)  

What is the name of the galaxy that contains our solar system?

(a)