17. Trees provide us oxygen. What benefit can we get from planting tree?
A. provides food
C. source of income
B. for decorative purposes
D. provide us with air
19. Jade sees to it that he provided his plants with enough water. What element in planting trees and fruit bearing trees is being shown?
A. carbon dioxide
C. enough sunlight
Kaylangan ko na po ngayon huhuhu
B. enough space
D. enough water ​