1. In a forest ecosystem, which organisms are directly affected if the populationof plants decreases?
a. carnivores
b. decomposer
c. herbivores
d. predators

2. Which best describes symbiosis? It is a close living relationship ….
a. between two species
b. where there are no benefits to gain c. where one specie serves as food for another specie
d. between two members of the same species where one specie relies upon another specie as food

3. Why are coral reefs important? They are .
a. tourist attractions
b. make the water shallow
c. colorful rocklike deposits under water
d. serve as habitat, hatchery, and nursery of different marine animals

4. What is the importance of mangroves? Provide_____.
a. shelter
b. breeding and nesting
c. barrier and flood defense
d. all of the above

5. Why can mangrove plants survive in brackish water while the other plants cannot? Mangroves.
a. have strong trunk and roots.
b. are adapted to filter seawater.
c. have roots that are often exposed to high water.
d. have roots that can filter salt water and excrete salt in their leaves.

Paki-sagutan po nang maayos at tama.
Salamat.
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