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Watch for 4 minutes. How many people were born in that time? How many people died?

If the current grade 9’s repeated this exercise exactly one year from today, at exactly the same time of day, by how much will the world’spopulation have grown? Do you think this is a problem? Why?

How much CO2 will have been added to the atmosphere by that time? How does South Africa compare to the rest of the world? Do you think all South African’scontribute equally to CO2 emissions in our country?

Discovering your impact

What Is A Carbon Footprint?

A carbon footprint is a measure of the impact our activities have on the environment, and in particular climate change. It relates to the amount ofgreenhouse gases produced in our day-to-day lives through burning fossil fuels for electricity, heating and transportation etc.

The carbon footprint is a measurement of all greenhouse gases we individually produce and has units of tonnes (or kg) of carbon dioxide equivalent.

A carbon footprint is made up of the sum of two parts, the primary footprint and the secondary footprint.

The primary footprint is a measure of our direct emissions of CO2 from the burning of fossil fuels including domestic energy consumption and transportation (e.g. car and plane).We have direct control of these.

The secondary footprint is a measure of the indirect CO2 emissions from the whole lifecycle of products we use - those associated with their manufacture and eventual breakdown. To putit very simply – the more we buy the more emissions will be caused on our behalf.

To work out what your carbon footprint is visit: http://www.carbonfootprint.com/calculator.aspx

To discover how to reduce your carbon footprint visit: http://www.carbonfootprint.com/minimisecfp.html

Climate change

Student’s guide to climate change

http://www.epa.gov/climatechange/kids/index.html

http://climate.nasa.gov/

http://climate.nasa.gov/imagesVideo/climateReel/index.cfm

Assignment

Identify the ABC’s (abiotic, biotic and cultural characteristics) of a natural environment near you. To make your ABC profile, follow the instructionsbelow.

1. Select an area that is undeveloped (i.e. no buildings, no pavement, no bulldozing, no spraying of pesticides, no farming, no grazing, etc.). Your areamust be at least the size of a soccer field. For some this will be an easy walk from their homes. Others will have to travel quite adistance‑‑lucky you! You can think of it as a field trip. Make a map of your province and show, approximately, where your area is located.

2. Identify the at least 10 “A” (abiotic) features of your area. Consider factors such as:

  • Landforms (mesa, mountain, valley, bench, etc..
  • Altitude

3. Identify at least 15 “B” (biotic) features of the area. (You may use common names.) Consider things such as:

  • Plants (trees, shrubs, grasses, flowers, etc.)
  • Insects (ants, bees, praying mantis, etc.)
  • Amphibians, reptiles, and/or fish

4. Identify at least 3 “C” (cultural) components. Look for evidence of human influence. Consider things such as:

  • *Recycling, conservation efforts
  • *Pollution
  • *Introduced species

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
why and for what was five kingdom of classification of organisms introduced
SUBHIKSHA Reply
give the ans as fast as possible
SUBHIKSHA
Comment on the ozone depletion over the period of 1982 to 1996
Mpho Reply

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Source:  OpenStax, Siyavula: life sciences grade 10. OpenStax CNX. Apr 11, 2012 Download for free at http://cnx.org/content/col11410/1.3
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