10 points for best science answer, please help!?

Question

1- nuclear reaction when small atoms combine to form larger elements,the basic source of energy in the sun.

2- the universe appears to consist of widely separated ____ of stars.

Please help ASAP ,I'm giving 10 points for best answer..

Thank you

Answer 1

give Mack best answer.

Answer 2

What is the van der Waals force?

Protein bodies.