44. Which practice causes destruction of coral reefs?
A Excessive fishing
8. Oil spill
C Dynamite fishing
D. All of these
45. How can we restore denuded forests?
A Conservation
B. Deforestation
C. Reforestation
D. Kaingin
46. How does the human population affect the ecosystem?
A. Animals are conserved.
B. Forests are cleared to give way to large subdivisions,
C. Plants and animals remain in the ecosystem.
D. Plants are conserved for the need of the people
47. The fishermen in the barangay use dynamites in order to catch fish. If this practice continues,
what do you think will happen to the marine resources?
A. Fishes will become abundant.
B. Marine life will increase.
C. Marine life will decrease.
D. The corals will multiply.
48. Some ecosystems are declared by the government as protected areas wherein cutting of trees
and hunting are not allowed. What is the goal of the government?
A. Control animals extinction
B. Expand the protected areas
C. Increase the population of trees
D. Maintain the biodiversity of the area
49. There is a plan to convert the nearby mangrove swamp to a resort. After researching, you want
to convince the other people in your neighbourhood to disagree. How will you tell them that the
plan should not happen?
A. Mangrove swamps filter pollutants from water.
B. Mangrove swamps are beautiful ecosystems.
C. Mangrove swamps provide shelter for animals.
D. Mangrove swamps protect the coastal community from waves and provide food and
business for people.
50. What species would easily adapt to the new habitat which was formerly a bushy area and
developed into housing area?
A. Eagle
B, Carabao
C. Mouse
D. Deer​