What I Have Learned
Write True if the statement is correct, and False if not. Write your answer on the
space before the number.
1. Sunlight is the main source of energy in all ecosystems.
2. The process of wearing away of the upper layer of soil by various agents
particularly water, wind, and mass movement is known as deforestation.
3. The changes in quality and quantity of water is only due to natural
disturbances.
4. Too much energy from the sun
can disrupt the photosynthesis in
plants.
5. Accumulation of toxic chemicals such as DDT is one of the problems
that may arise when there is changes in the temperature in the ecosystem.
6. A change of temperature limits reproduction and survival rate of
organisms.
7. The release of pollutants into the air is called as water pollution.
8. Degradation of air is because of burning of fuels, vehicles, and exhaust
from factories.
9. Light is the abiotic factor that affects every function of plants and
animals by controlling the rate of their metabolism.
10. Human activities like deforestation, overgrazing, and overcropping are
major causes of soil erosion.
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