Human Impacts on Ecosystems (Science 7 - Alberta, G7 U1 T2)

The human population has a significant impact on ecosystems. The population of Alberta on July 1, 2023, was recorded at 4 700 000. What do you estimate the population of Alberta was on the day we became a province on September 1, 1905?

• 18 000 people

• 180 000 people

• 1 800 000 people

• 1 800 people

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NGSS.MS-ESS3-4

Organize the following examples as natural resources or synthetic (manufactured) resources:

Groups:

(a) Natural

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(b) Synthetic (manufactured)

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NGSS.MS-PS1-3

Interpret the graph and place these three labels where they belong.

c

d

e

The past

The vernal equinox

The future

The Age of Aquarius

The present

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NGSS.MS-ESS3-4

Use the diagram to match parts of the bison body to what they were used for by Indigenous populations prior to the arrival of the manufacturing European populations.

• Shovels

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• Soap

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• Cups

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• Glue

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Head-Smashed-In Buffalo Jump is recognized as a UNESCO World Heritage site. Dry Island Buffalo Jump is also recognized as a provincial heritage site. On the map, choose the two locations where these two sites are.

Classify the examples below as either a required physical need or a psychological want. There are four of each.

Groups:

(a) Need

,

(b) Want

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In this topic, you may have learned about periodically controlled fires. What would be the order of key stages in having a periodically controlled fire?

• Ignition

• Fully developed

• Development

• Decay

There was a chemical that was developed in the 1940s, used throughout the 1950s and 1960s, decreased in use through the 1970s, and banned in Canada by 1985. Used as a pesticide, this chemical caused the softening of egg shells to the point that many birds found it hard to reproduce. One such bird that saw a decrease in population but has begun to rebound from the chemical is the peregrine falcon. What chemical is this?

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NGSS.HS-LS4-5

Match each of the pesticides below with what they attempt to control:

• Rodenticide

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• Classroom rules

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• Fungicides

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• Herbicides

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• Insecticide

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

It may have been discussed in your class that early in Alberta's history, the swift fox was almost eliminated from Alberta due to the use of poisons. Suppose the fox was removed from this food web. Place a dot on the organisms that would likely experience an increase in population right after the elimination of the fox:

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4