Match the following letters with the correct label. Circsystem8edit2.png

Match the following cardiovascular systems with the correct organism

Match the following letters with the correct labels. Circsystem9edit.png

7) A plutino is a trans-Neptunian object in 2:3 orbital resonance with:

6) Which of the following is **not** evidence for a large impact on Earth 65 million years ago?

11) What is a hot Jupiter?

17) What is the solar activity cycle?

15) What balances the inward push of gravity inside the Sun?

​Most good stories end with

​Children in preschool can learn about