Environmental Science
Q & A w/ Rationales
2024
,1. Which of the following is an example of a renewable
energy source?
a) Coal
b) Natural gas
c) Solar power
d) Oil
Answer: c) Solar power
Rationale: Solar power is generated from the sun's energy
and is considered a renewable energy source because it is
continuously replenished.
2. The greenhouse effect refers to:
a) The process of plants converting sunlight into energy
b) The trapping of heat in the Earth's atmosphere by certain
gases
c) The formation of clouds that block sunlight from
reaching the Earth's surface
d) The production of oxygen by photosynthetic organisms
Answer: b) The trapping of heat in the Earth's atmosphere
by certain gases
Rationale: The greenhouse effect is a natural process where
certain gases, such as carbon dioxide and methane, trap
heat in the Earth's atmosphere. This process is necessary
for life on Earth, but human activities have led to an
enhanced greenhouse effect, causing global warming.
3. The primary source of air pollution caused by burning
, fossil fuels is:
a) Sulfur dioxide (SO2)
b) Carbon monoxide (CO)
c) Nitrogen oxides (NOx)
d) Ozone (O3)
Answer: c) Nitrogen oxides (NOx)
Rationale: When fossil fuels are burned, such as in vehicles
and power plants, they release nitrogen oxides (NOx),
which contribute to air pollution and the formation of smog
and acid rain.
4. Which of the following is a major cause of
deforestation?
a) Release of greenhouse gases
b) Mining operations
c) Overgrazing by livestock
d) Clearing land for agriculture
Answer: d) Clearing land for agriculture
Rationale: Deforestation is primarily caused by clearing
forests to make way for agriculture, such as for planting
crops or rearing livestock.
5. What is the main goal of sustainable development?
a) To maximize economic growth at the expense of
environmental degradation
b) To ensure the welfare and quality of life for present and
future generations
c) To exploit natural resources for short-term profit