Circulation/Respiration Facts Review

Match it! Select the correct answer from the pull down...Good luck!

Which of the following is an example of a tissue?

To make energy, our bodies need what gas?

Which of the following is an example of an organ?

What process do plants use to create their own food?

What gas do animals breathe out that plants need to perform photosynthesis?

After cell, the next level of organization in a multi-cellular organism is:

Why do we have a respiratory system?

What is it called when animals breathe?