Mr. Dan – CIS Abu Dhabi Science 7
Topic 1 - Interactions Within an Ecosystem
1. Ecology is the study of the relationship between living
_________________________________________________.
2. Living things :
Need ________________________________________.
Animals eat food while plants make it. Food gives living things energy. Food also provides nutrients.
Need __________________________________________.
Living things can not function and will eventually die without water.
Exchange _______________________________________.
All living things exchange gases. Plants use carbon dioxide to make food and produce oxygen. Most other living things use oxygen to produce energy and give off carbon dioxide.
Need ____________________________________________.
3. Adaptations
Living things are adapted, so they 'fit' into their surroundings, to
________________________________________________________________________.
An adaptation is an inherited characteristic that helps an organism survive and reproduce in
_________________________________________________________________________.
Sometimes adaptations are learned during the
__________________________________________________________________________.
List 4 examples of adaptations:
____________________________________ __________________________________
____________________________________ __________________________________
Mr. Dan – CIS Abu Dhabi Science 7
4. Ecosystems
An ecosystem is the interactions between ________________________________________
________________________ in a particular environment.
An ecosystem is a place where ________________________________________________
__________________, such as a rotting log, or a forest.
All organisms and parts within this place are interacting all the time and adjustments must
occur if the _______________________________________________________________.
5. Interactions in Ecosystems
Symbiosis
Is when two species live closely together in a relationship that lasts over time occurs
There are _________________ forms of symbiosis:
1) Mutualism
Mutualism occurs when there is a relationship between two different organisms, in which each
partner ___________________________________________________________________.
2) Parasitism
Parasitism occurs when there is a relationship between two different organisms, in which one
partner _________________ from the relationship, while the other partner is ____________
__________________________________.
3) Commensalism
Commensalism occurs when there is a relationship between two different organisms, in which
one partner _____________________________________ from the relationship, while the
other neither _______________________________________________________________.
From the notes what is one example of each symbiotic relationship:
Mutualism- Commensalism-
Parasitism-
Mr. Dan – CIS Abu Dhabi Science 7
Symbiotic Relationship Review
1. This is an example of __________ _____ because __________________
2. This is an example of __________ _____ because __________________
3. This is an example of __________ _____ because __________________
4. This is an example of __________ _____ because __________________
6. Impacts
What is an example of another way that animals impact their environment?
___________________________________________________________________________
Topic 1 review
1 a) list all the basic needs that all organisms share
b) Imagine that you are a white-footed mouse, living in a prairie grassland ecosystem. What are some different ways you can meet your needs?
2. Compare the Falcon’s feet to the duck’s feet in the pictures in your text on page 17
a) in what ways are the ducks feet adapted for living in water?
b) In what way are the Falcon’s feet adapted for catching food?
Mr. Dan – CIS Abu Dhabi Science 7
3. Describe 2 adaptations of a fish. Explain how theses adaptations help the fish live in its environment.
4. Define symbiosis in your own words. Give on example of each not mentioned in this unit.
Mr. Dan – CIS Abu Dhabi Science 7
Topic 2 – Human Impacts on Ecosystems
7. Natural Resources are the materials and products that are found in nature, that people
use to meet _______________________________. The impact that people have on the
use of resources can be very ____________________, or can be___________________,
and can lead to positive or ________________________________________________.
The needs of all living things now have to be met with the available
____________________________________.
How we are able to satisfy these needs with minimal conflict will determine how
________________________________________________________________________.
8. People and Nature - A Changing Relationship
In one sentence describe how human activities have changed over the last 200 years.
9. When Is a Need a Want?
Needs are basic to survival, whereas, ' wants ' are things that just make survival
____________________________________________________________.
Each time a need or a want is satisfied, natural resources or __________________
______________________________. This impacts the environment we live in.
Mr. Dan – CIS Abu Dhabi Science 7
List a few ways our “wants” may impact our ecosystems and wildlife. ----
10.No Simple Answers
Setting a forest on fire (a _________________________) is often necessary to maintain a
balance in _____________________________________________________________.
These fires get rid of small trees, leaves, needles and other debris that settles on the
______________________________________________________.
The new growth after a fire becomes food for elk, deer and other animals that need these
_______________________________________________________.
11.The use of DDT (a chemical pesticide) was found to have a negative effect on
_______________________________________________________.
It wasn't until the species was almost lost completely that ____________________________.
DDT was banned and recovery programs were put in place to restore the numbers of
___________________________________________.
12.Swift foxes were accidentally poisoned because certain predators were seen as
__________________________. When the Swift foxes used the poison instead, the
spcies almost _________________________.
Natural control is necessary in _______________________
If this natural control is upset, the impact can have
____________________________
which were never ____________________________________.
Mr. Dan – CIS Abu Dhabi Science 7
Topic 2 – Review
1) What are natural resources?
Example 1:
How do humans use them to meet their needs?
Example 2:
How do humans use them to meet their needs?
1. Complete the chart
Activity Impact on the environment
Positive or negative impact
Alternative action to lessen negative impact
Using plastic bags in you lunch
Mowing the lawn and putting the grass clippings in the garbage
Riding your bike
2. Think of two activities that you perform in a typical day, and describe two impacts that each activity has on your environment. Are those activities wants or needs?
Mr. Dan – CIS Abu Dhabi Science 7
3. How has the relationship between people and environment changed in Alberta?
Topic 3 – Environmental Choices
Mr. Dan – CIS Abu Dhabi Science 7
14.Your Ecological Footprint
The impact you are having on the environment
is your _________________________.
Sustainability means that the resources from
the environment can ____________________
__________________________________.
15. Impact Here and There
To calculate your ecological footprint, you need to determine the total area of land
________________________________and water needed to supply ________________
that you use, as well as absorb all of the _______________________________.
Answer to slide #73 on reducing your ecological footprint-
16. Ways to reduce ecological footprint include:
1. Be aware of the products you
2. Reduce the
3. Reduce the number of
4. Reduce the amount of
Mr. Dan – CIS Abu Dhabi Science 7
Topic 1-3 Review Homework
Name : ___________________________ Class : 7 ___
Topic test is on ________________________________
Reviewing Key Terms
1. Match the description in column A with the correct term in column B. (4 points)
Column Aa. a long-lasting relationship between two
organismsb. all of the interacting living and non-living
parts in an areac. a relationship between two organisms in
which one organism benefits and the other organism is harmed
d. a scientist who studies interactions occurring in the environment
e. materials and products found in nature and used to meet humans' wants and needs
f. using resources no more quickly than they can be renewed and discharging wastes no more quickly than they can be absorbed
g. the total area that would be needed to provide the natural resources used by an individual
h. an inherited characteristic that helps an organism survive in its environment
Column B1. adaptation
2. ecological footprint
3. ecologist
4. symbiosis
5. natural resources
6. sustainability
7. parasitism
8. ecosystem
2. Examine the illustration on page 37 of your text. Choose two organisms and list their needs. How do they meet their needs? (For example, the butterflies eat the nectar from the flowers in the flowerbeds.) (2 point)
2. Adaptations allow organisms to "fit" in their environments. Describe two adaptations that you can see in the illustration.
Explain how they help the organisms. (4 points)
Mr. Dan – CIS Abu Dhabi Science 7
3. In your own words, define the term "ecosystem.” Name three ecosystems in the illustration. (4 points)
5. Humans use technologies to meet their needs and their wants. List three ways that you use technology every day to meet your needs. Describe how one of those technologies uses a natural resource. Does this have an impact on the environment? Explain. (5 points)
6. Explain how Aboriginal people who lived in Canada 200 years ago had different impacts on their environment. (2 points)
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