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JSS2: BASIC SCIENCE - 1ST TERM

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  1. Living Things (Habitat) | Week 1, 2 & 3
    8Topics
    |
    1 Quiz
  2. Living Things (Uniqueness of Man) | Week 4
    9Topics
    |
    1 Quiz
  3. Growth and Development | Week 5 & 6
    4Topics
    |
    1 Quiz
  4. Chemicals | Week 7 & 8
    4Topics
    |
    1 Quiz
  5. Work, Energy & Power | Week 9
    4Topics
    |
    1 Quiz
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What is Ecology?

Ecology is defined as the study of the inter-relationships, between living organisms and their environment.

Ecological factors are factors in the environment that affect living organisms. They are the factors that cause changes in habitats. Ecological factors are classified into two, namely, biotic and abiotic factors.

Biotic Factors:

Biotic factors are all the living organisms in an environment. Their living together can produce harmful and beneficial results, such as:

1. Animals feed on plants or and on other animals. This is an example of biotic factors related to feeding.

2. Plants compete with themselves for light and water.

3. Animals like insects affect plants, for example, bees, butterflies, etc, pollinate flowers when they feed on them.

4. Termites and worms aerate the soil and therefore make humus.

Abiotic Factors:

Abiotic factors are non-living things such as temperature, light, wind, rainfall, which affect the organisms within an environment. Abiotic factors can be grouped into three, namely climate factors, physiographic factors, and edaphic factors.

Climate factors include temperature, rainfall, wind, humidity, etc. Edaphic factors are things associated with soil such as soil type, soil moisture content, soil acidity, etc, and physiographic factors involve the structure of the earth’s surface such as a slope, hill, valley, and so on.

Instruments used to Measure Ecological Factors:

1. Temperature: Thermometer.

2. Rainfall: Rain gauge.

3. Light: Light meter.

4. Relative Humidity: Hygrometer.

5. Wind speed: Anemometer.

6. Wind direction: Wind vane.

7. Pressure: Barometer.

8. Water depth: Floated objects.

9. Turbidity: Secchi disk.

thermometer
Thermometer.
rain gauge
Rain Gauge.
light meter
Light Meter.
Hygrometer
Hygrometer.
Anemometer
Anemometer.
Wind vane
Wind Vane.
Barometer
Barometer.
Secchi disk
Secchi disk.

Fun Fact

Scientists that study habitat are called ecologists.

ecologist
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