Tell me why, tell me how

Author
Stewart, Melissa Murphy, Patricia J Mara, Wil Hicks, Terry Allan Bailer, Darice Rebman, Renee C
 
1)  How do fish breathe underwater?
Author
Pub. Date
2008
Description
3)  How do birds fly?
4)  How do plants grow?
5)  How does the wind blow?
6)  Why do the seasons change?
7)  Why is the sky blue?
Author
8)  How do bees make honey?
Author
Pub. Date
[2009]
Description
Author
Pub. Date
c2009
Description
11)  Why do we see rainbows?
Author
Pub. Date
[2009]
Description
13)  Why do leaves change color?
14)  How do tadpoles become frogs?
15)  How do tornadoes form?
16)  How do waves form?
Author
17)  Why do earthquakes happen?
Author
18)  Why does it thunder and lightning?