Caused by nature
What are the causes of famines by nature?
Dry weather, drought, floods, earthquakes, volcanoes, plagues.
Causes of famines caused by people
Wars, desertification, governments failing to provide a efficient means of getting food from another country, cash crops, etc.
name 4 optical instruments
Mirror, binoculars, magnifying glass, telescope, glasses, microscope
Who painted the "Mona Lisa"?
Leonardo Da Vinci
What are the most common causes of famines caused by nature?
Flooding and drought
How does war cause famine?
War turns farms and fields into battlegrounds, and farmer cannot plant their seeds; soldiers kill farm animals and destroy crops and food stores. Also wars disrupt the transport of food.
Córnea, pupil, lens and retina
In what year was the first iPhone released?
2007
What is a drought?
Is a period of abnormally dry weather, where soon the wells, rivers and reservoirs dry up too.
How does desertification cause famine?
Some causes are overgrazing and deforestation
This type of curved mirror have a reflecting surface that curves towards from de reflected object (like the back side of a spoon)
Convex mirror
Which planet is known as the "Red Planet"?
Mars
What are floods?
When the water covers the crops and destroy them.
What happens when a land become a dessert?
It can´t be farmed and it can´t produce enough food for people living there.
This type of curved mirror have a reflecting surface that curves away from the reflected object (like the front of a spoon)
Concave mirror
What is the world's largest ocean?
Pacific Ocean
In 2013, the island of _______ suffered a terrible plague of _______
In 2013, the island of Madagascar suffered a terrible plague of locusts.
During the last 40 years, the _____ in Africa and the _____ in india have become larger because of overgrazing and deforestation.
The Sahara Desert in Africa and The Thar Desert in India
What does the law of reflection states?
That the angle of incidence and the angle of reflection produced by these two are equal.
How many teeth does an adult human have?
32