V. Match the effect to its cause by writing the letter in the proper blank.
EFFECT
CAUSE
11. Most plants grow best where sunshine falls a. they help do the work on the farm
12. We hear thunder after a lightning flash b. it is found to directly cause cancer
13. It is better to use fluorescent light
c. the leaves use sunlight in making plant food
14. Farmers want to have many children d. it is cool light and relatively cheap
15. Smoking cigarettes is dangerous
e light travels much faster than sound​