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English first additional language

Grade 4

What a wonderful world

Module 36

Pollution

Activity 1

To read a graph [lo 3.3.4]

THINKING AND REASONING

One of the greatest threats to mankind today is pollution. There are different kinds of pollution. One of the worst is ocean pollution. One must remember that oceans cover more than 70% of the surface of the earth and what happens in a certain part of the sea can influence almost the whole world. Pollution is a problem that directly affects all the organisms in the sea and spoils the natural balance of sea life.

Oil pollution is one of the most dramatic forms of ocean pollution.

Activity 2

To write lists with headings [lo 4.1.2]

In the table below, write down the six headings that you find in the graph, and next to each one, write a short explanation of what it is and how it occurs. The first one is given as an example. Write a heading for the whole table.

HEADING:
Tanker accidents Ship crashes and oil leaks from the ship.Ship breaks up because it is old and oil leaks into the sea.

It is our duty to look after our natural resources, but unfortunately we often destroy precious life because of our greed. Some ships’ owners don’t look after their ships properly and just carry on sending old dilapidated ships to sea. In so doing, they threaten the lives of the crew and pose a threat to marine life.

Until quite recently human beings have – generally speaking – behaved very selfishly towards other creatures and also towards nature in general. They did not think about the consequences of their actions. People are by nature greedy, careless and vain. These characteristics have caused many wonderful animals to become extinct.

Some of the earth’s creatures that have in recent times faced extinction are the right whale, the panda, the wild dog and the rhinoceros. Fortunately programmes have been put in place to save these animals. Some, like the whale, are even being used to promote tourism. Think of the famous Whale Festival that is held in Hermanus every year.

You all know of the dinosaurs that used to roam the earth. You have probably also heard of the ancient mammoths. But have you heard of the dodo?

In 1598 AD (some sources say it was slightly earlier) Portuguese sailors landed on the island of Mauritius, and discovered a previously unknown species of bird that they called the Dodo. As the dodo had never before had any contact with humans, it had no fear of them. It was a gentle creature and was almost like an innocent child as it approached the sailors. They thought it was rather stupid, and that it why they called it a “dodo” (meaning something like “simpleton” in Portuguese).

The dodo weighed up to 14 kg and was very good to eat. Its wings were underdeveloped, so it couldn’t fly. It was, therefore, an easy-to-catch source of food for both sailors and settlers. Later, when other animals like dogs and pigs were introduced to the island, the dodo fell victim to these invaders as well. As the settlers

cleared the forests, the dodo’s natural habitat was destroyed.

By 1681 the dodo was extinct.

Today it is represented in museums by only parts of skeletons. There is one complete skeleton that was compiled from the bones of different individual birds.

Source: (External Link)

Activity 3

To answer and begin to ask more complex questions [lo 5.2.1]

1. Answer the following questions (in full sentences and in your own words) that are based on the previous passage:

(a) Why was it so easy to catch the dodo? Give two reasons.

…………………………………………………………………………

…………………………………………………………………………

(b) Why wasn’t the dodo afraid of humans at first?

…………………………………………………………………………

…………………………………………………………………………

…………………………………………………………………………

…………………………………………………………………………

(c) In what way, do you think, did the introduction of pigs onto the island affect the dodo’s life?

…………………………………………………………………………

…………………………………………………………………………

…………………………………………………………………………

(d) What happens to a creature when its natural habitat is destroyed?

…………………………………………………………………………

…………………………………………………………………………

…………………………………………………………………………

…………………………………………………………………………

…………………………………………………………………………

(e) How are whales being used to promote tourism nowadays?

…………………………………………………………………………

…………………………………………………………………………

…………………………………………………………………………

…………………………………………………………………………

…………………………………………………………………………

(f) What does the AD (in 1598 AD) stand for? Do you know the Latin form?

…………………………………………………………………………

…………………………………………………………………………

Assessment

Learning outcome 3: reading and viewing

The learner will be able to read and view for information and enjoyment, and to respond critically to the aesthetic, cultural and emotional values in texts.

Assessment standard

We know this when the learner:

3.3 reads for information:

  • reads diagrams, graphs and charts (e.g. a family tree).

Learning outcome 4: writing

The learner will be able to write different kinds of factual and imaginative texts for a wide range of purposes.

Assessment standard

We know this when the learner:

4.1 writes to communicate information:

4.1.2 writes lists with headings;

Learning outcome 5: thinking and reasoning

The learner will able to use language to think and reason, and access, process and use information for learning.

Assessment standard

We know this when the learner:

5.2 uses language for thinking:

5.2.1 answers and begins to ask some more complex questions (e.g. “Why…?” “How do you think…?”).

Questions & Answers

how do they get the third part x = (32)5/4
kinnecy Reply
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
hii
Uday
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
is it 3×y ?
Joan Reply
J, combine like terms 7x-4y
Bridget Reply
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, English first additional language grade 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11093/1.1
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