#1
What is the primary function of the respiratory system?
Exchange of gases
ExplanationFacilitates the transfer of oxygen and carbon dioxide between the body and the environment.
#2
Which gas is primarily responsible for the greenhouse effect?
Carbon dioxide
ExplanationTraps heat in the Earth's atmosphere, leading to global warming.
#3
What is the primary cause of hypothermia?
Exposure to cold
ExplanationBody loses heat faster than it can produce, leading to dangerously low body temperature.
#4
What is the primary function of the kidneys in the human body?
Filtration of blood and waste elimination
ExplanationRegulates body's fluid balance and removes waste products from blood.
#5
Which heat-related illness is characterized by heavy sweating, weakness, and nausea?
Heat exhaustion
ExplanationResults from dehydration and electrolyte imbalance due to excessive heat.
#6
Which of the following is a symptom of heatstroke?
Hot and dry skin
ExplanationIndicates severe overheating and dehydration.
#7
What is the recommended first aid for someone experiencing anaphylaxis?
Injecting epinephrine
ExplanationCounteracts severe allergic reactions quickly.
#8
What is the recommended immediate action for someone bitten by a venomous snake?
Keep the person calm and seek medical help
ExplanationPrevents rapid spread of venom and ensures prompt treatment.
#9
In CPR (Cardiopulmonary Resuscitation), what does the acronym 'C-A-B' stand for?
Compression, Airway, Breathing
ExplanationSequence of actions to sustain life.
#10
What is the leading cause of indoor air pollution in households using solid fuels for cooking?
Particulate matter
ExplanationEmissions from burning solid fuels contaminate indoor air.
#11
In the context of water safety, what does the term 'Lifeguard's 10/20 rule' refer to?
The time interval for surveillance
ExplanationGuidelines for lifeguards to maintain vigilance.
#12
What is the primary cause of altitude sickness?
Low atmospheric pressure
ExplanationResults from decreased oxygen levels at high elevations.
#13
What is the primary purpose of the ozone layer in the Earth's atmosphere?
Absorb ultraviolet (UV) radiation
ExplanationProtects living organisms from harmful UV rays.
#14
What is the primary purpose of wetlands in an ecosystem?
Habitat for diverse species
ExplanationSupports rich biodiversity and provides critical ecosystem services.
#15
Which environmental emergency is associated with the release of radioactive materials into the atmosphere?
Nuclear meltdown
ExplanationUncontrolled nuclear reactor overheating leading to radioactive contamination.