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The present population growth rate of
the world is around 1.09% per year (down from 1.12%
in 2017 and 1.14% in 2016). About 83 million people per year have
increased averagely.

The annual growth rate of the world reached
the peak in the late 1960s, when the increasing rate was at around 2%. The increasing
rate has almost halved since then, and it will continue to decline in the
coming years. It is estimated to reach 1% by 2023, less than 0.5% by 2052, and
0.25% in 2076.World population will therefore continue to grow in the 21st
century, but at a much
slower rate compared to the recent past. World population has doubled
(100% increase) in 40 years from 1959 (3 billion) to 1999 (6 billion). It is
now estimated that it will take another nearly 40 years to increase by another
50% to become 9 billion by 2037.The latest world population projections indicate
that world population will reach 10 billion persons in the year 2055 and 11
billion in the year 2088.

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The population of Bangladesh is increasing day by day. With the
increasing number of population, our resource and area are not increasing. So
the growing population affect our limited resources very much. Now our
population is about 17 lacks.

Ecological footprint measures how much land and water area a human
population requires to produce the resources it consumes and to absorb its
wastes under prevailing technology. It measures the extent to which humanity is
using nature’s resources faster than they can regenerate. Since the resources
are almost fixed, but the population is increasing, so the resource for per
head is reduced exponentially.

 

 

 

 

 

 

 

 

 

 

 

 

 

1.1           
Intensity of disaster in
Bangladesh

Bangladesh is a disaster prone country due to its location. It is one of
the largest deltas in the world. The three major rivers named the Ganges, the
Brahmaputra and the Meghna pass through the country.

Every year different types of hazards affect our country. Some hazards of
them are given below:

Flood

Landslide

River Bank Erosion

Tsunami

Cyclone and Storm Surges

Nor’easter

Drought

Water Logging

Arsenic Contamination

Earthquake

Our sea level is rising. This increasing of sea level results the
increasing of climate refugees. The privileges are insufficient for the local
people, climate refugees are increasing its scarcity.

Flood occurs in Bangladesh almost every year because of the unique
topography, rainfall patterns and river system. Every 5 to 10 years,
devastating flood occurs.80% of our country is considered as flood plain which
is formed by alluvial and deltaic deposits and 60% of the land is below 5 to 7m
above sea level.

Another hazard is cyclone which is also responsible for climate
refugees. Storm surges accompanying cyclones hitting Bangladesh have been noted
to be 3m to 9m high. Five severe cyclonic storms hit Bangladesh every year on
an average.

Tornado is a common hazard of our country. Bangladesh is third country
with the highest frequency of tornadoes, behind the USA and Canada.

Drought is defined in Bangladesh as the period when moisture content of
soil is less than the required amount for satisfactory crop-growth during the
normal crop-growing season. It is common in the northwestern districts of
Bangladesh. It hampers the agricultural production .Every five Years,
Bangladesh id affected by the major country-wide drought. Local droughts occur
regularly.

Riverbank erosion is an endemic and recurrent natural hazard in
Bangladesh. When rivers enter the nature stage, they become sluggish and
meander or braid. This oscillations cause massive riverbank erosion.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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