Share 5A - M2
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Diseases spread through contaminated water are called _________ diseases.
waterborne diseases
An ____ is a layer of rock or soil that holds water.
aquifer
A disease that affects the liver and causes yellowing of the skin, tiredness, and fever.
hepatitis
How do doctors normally treat patients with typhoid?
with antibiotics
A disease that causes blood in the urine and sometimes in the faeces.
bilharzia
What is added to water to kill germs during treatment?
chlorine
Give three examples of things that increases air pollution.
deforestation, waste burning, smoking...
How many layers does the atmosphere have? Name them in correct order.
troposphere, stratosphere, mesosphere, thermosphere, and exosphere
Water from water sources is not safe to drink because it may contain ___________.
germs
What cloud type is shown?
cumulus
What do you call the process when water vapor cools, turning into liquid and forming clouds?
condensation
Smoking is ________ to your health.
dangerous
State the correct order for the water treatment process. (grid > ...)
grid > settlement tank > filter bed > chlorination plant
What do the 3Rs mean?
reduce, reuse, recycle
What is the most abundant gas in the atmosphere?
nitrogen
Meteors burn up in which layer of the atmosphere?
mesosphere
