Quarter1 Module 5

The following are consequences of water pollution EXCEPT

• infectious diseases

• oversupply of plant nutrients

• accumulation of toxic chemicals

• increased dissolved oxygen for marine living organisms

How is the forest ecosystem affected when trees are cut down?

• Nutrients are lost in the soil.

• Oxygen will no longer be available for everyone.

• Animals who depend on forests lose their shelter and food

• There will be available space for humans in building houses and

  other infrastructures.

How may conservation be achieved?

• by using fine nets

• by collecting corals and shells

• by using the appropriate size of nets

• by using cyanide for collecting coral fish

What do you call the organisms in which the last species have already

died?

• abundant

• endangered

• extinct

• threatened

The environmental conditions that keep a population from increasing in

size and help balance ecosystems is called ________.

• limiting factor

• biotic factor

• abiotic factor

• environmental factor