Zusammenfassung der Ressource
Biology
- Alcohol
- Measured in units of alcohol
- It is a type of drug
- A depressant
- Slows down signals in the brain and nerves
- It is also called ethanol
- Short-term effects
- Impaired vision
- Sleepiness
- Blurred vision and slurred speech
- Balance and muscle control
- Long-term effects
- Damage to liver and the brain
- Over time, this can lead to cirrhoses
- Pollution
- Carbon Dioxide
- Caused by the burning of fossil fuel
- Can increase greenhouse
gases and global warming
- CFCs
- Destroys the ozone layer
- Lets more UV light to reach the
Earth's surface.
- Chlorofluorocarbons
- Used in aerosol cans, refrigerators
and insulating material
- Sulphur Dioxide
- From burning fossil fuels
- Causes acid Rain
- Can be measured using direct
methods or indicator organisms
- Water pollution
- Caused by harmful substances
in rivers, lakes and seas
- Invertebrate animals cannot
survive in polluted water
- Therefore, it tells us if the water is
polluted and how much.
- Fitness
- The ability to do physical activities
- Fit people's pulse rate will return to
normal more quickly after exercise
- It can be measured by:
- Strength
- By the amount of weights lifted
- Flexibility
- By the amount of joint
movement
- Stamina
- By the time of sustained exercise
- Agility
- By changing direction many times
- Speed
- By a sprint race
- Cardiovascular efficiency
- How well a person's
circulatory system works
- Smoking
- Increases blood
pressure
- Contain nicotine - an addictive substance
- increases heart
rate
- Carbon monoxide
- Carries less oxygen around the body
- Increases heart
rate
- You can get a smokers cough
because:
- Dust is irritating epithelial lining
- Mucus is not being removed by the cilia