Natural or chemical products used to control or eliminate pests
- Insecticides, herbicides, fungicides, bactericides
- Sulfur, arsenic trioxide, lead arsenate
- Nicotine, extract from tobacco leaves
- Strychnine tree
Mercury, Selenium, and Lithium Metals
- Methylmercury is highly toxic
- Famous case involving professor from Dartmouth
- Prof Wetterhahn was an expert in metal toxicity
- Became ill and died in 1997 as a result of a laboratory accident involving a
Metals and other Inorganic Elements
What potential toxicants are metals and other organics?
- Metals such as zinc (Zn), cadmium (Cd), mercury (Hg), lead (Pb), etc
- Metalloids such as arsenic (As)
- Non-metals such as fluorine (F)
- The term heavy metal i
Changing Disease Pattern
- 1900s pneumonia and tuberculosis were the two leading causes of death in most countries
- Cardiovascular disease
- Respiratory disease
- Chronic liver disease
- These are the leading cause of death in developed c
Sources of Arsenic
- Naturally high arsenic in groundwater used for drinking has caused health problems in many
parts of the world
- Arsenic mass poisoning in West Bengal (India) and Bangladesh
- In 1970s, UN agencies promoted the use of groundwat
Bioaccumulation and Food Chain Biomagnification
- Accumulation of compound in exposed organisms (over time, with age, with persistence)
- Combination of two factors:
- 1) Bioconcentration: partitioning of compound into tissue or organism
The Great Smog of London 1952
The Great Smog of 1952 was a severe air-pollution event that affected London during December
1952. A period of cold weather, combined with an anticyclone and windless conditions,
collected airborne po
October 4th, 2016
Module 2: Detailed Topic Description
Q1: What can I do as an individual?
The topic I have chosen is the role advertising plays in overconsumption in my
generation, Gen Z. Overconsumption impacts our environm
Monday, October 24th, 2016
Question 1: What should we do about population and consumption?
Rapid population growth and technological innovation, combined with our lack of
understanding about how the natural systems of which we are a
Q1: What is the issue that you have chosen?
The issue that I have chosen to focus on is consumerism and our need to constantly overconsume
with little regard on the impact it has on our environment. Overconsumption impacts on
November 25th, 2016
Module 3: Describe Barriers
Q1: What are the barriers and limitations to individual action?
Advertising companies play a huge role in overconsumption in Generation Z. There have
been products that I have
November 21st, 2016
Online Tutorial Question 3: Food
What are our options for food production?
The worlds food production system faces a great balancing act. As the demand for food
rises so do the costs associated with food-p
Section A: Answers to be recorded on
this exam paper
Page 1 of 7 pages
QUEENS UNIVERSITY FINAL EXAMINATION
FACULTY OF ARTS AND SCIENCE
SCHOOL OF ENVIRONMENTAL STUDIES
ENSC 315 Susan Belyea and Gary vanLoon
April 13, 2015
INSTRUCTIONS TO ST
ENSC 203: Environment & Sustainability Notes
No tutorial until week 5
Perceptions & Paradigms
- Why we talk about paradigms?
- What are they, and how they change?
- Dominant social paradigms
o Human environment relations in DSP
o Critiques of DS
Source. The Globe
and Mail Jan.
Perceptions and Paradigms (1):
Why are we talking about Paradigms?
What are paradigms? How do they change?
Social paradigms: dominant social
Human-environment relations in the DSP
ENSC 203 Climate Change. October 18, 2016
The Global System and Carbon
- 3 billion 1 million years ago
o atmosphere started with high Co2 levels (2000-4000ppm)
o plants grew on land and in water, used sun, took CO2 from atmosphere.
o Most carbon went back
Flow, Renewable, and
Youve probably heard of renewable resources, but whats
flow? Before you know about flow resources, you should learn
what renewable and non-renewable means.
Renewable used to describe something that can
The water cycle is controlled by the Sun, the closest star to the Earth. The
heat from the sun makes water change its state of matter (there are three, in this
In this cycle there are six ways water can change its shape: melting,
Landforms and rivers
(Notes on Pearsons Physical GEOGRAPHY 7, Chapter 2)
Natural Disasters in the News
You probably hear shocking events of natural disasters that happen in
different places, like the tsunami that happened in 2004. The tsunami
(Notes on Pearsons Physical GEOGRAPHY
7, Chapter 2)
Five Environmental Factors
Key Words and
Endangered Species is at
the edge of extinction, or
will soon be.
Environment the physical
No matter what, every single
Fresh Water or Salt
Water? Whats the
Fresh water and salt water are different in many ways. They are different
because of density and salinity.
When it comes to density, salt water has more. That meaning, anything that
has less density
Contaminants are harmful substances that dissolved in the water. They
can harm both plants and animals. The definition of contaminant is An
undesirable substance in a mixture.
There are two types of contaminants: Chemical and Biological.
Pure Substance or Mixture?
Water is a pure substance, not a mixture. Or at least pure water is. Pure
water is colourless, tasteless, and odourless.
If water is given colour, taste, smell, or possibly all three it is because of
Water Treatment Process
Water is the most wanted resource because every living thing depends
on it. Water is unique, it helps the body do many things from
transporting substances to allowing organism cool down in the heat.
Humans can only drink fres
The Wastewater Treatment is a system used to
clean water that has contaminants in it.
Contaminants are either chemical or biological.
o Chemical contaminants are usually caused by
o Biological is usually organic matter or mic
ENSC 203 2014
Agnes Etherington Art Centre Exhibition: I hope humanity.
Name: Courtney Wilson
Student Number: 10094282
TA Name: Tash-Lynn Colson
Due Thursday Nov. 27, 2014
1. Identify and explain at least
ENSC315 READINGS IMPORTANT NOTES:
6.1 FAO Global Food Loss and Food Waste: Extent, Causes & Prevention
one-third of food produced for human consumption is lost or wasted globally, which amounts to
about 1.3 billion tons per year.
food waste by consumers i