Displaying 1 - 7 of 7 Resources

Bakteria - Bacteria

Introduction to bacteria

Subject and Topic
Form 1
Biology
Safety in our environment
Waste disposal
Resource Type
Video
Language
English
Publisher
KhanAcademyKiswahili
Publication Date
2012
Creator/Author
KhanAcademyKiswahili
Keyword
Bacteria

Biodiversity and natural selection

Patterns and processes of evolution. How evolution and natural selection are reflected in the similarities and differences of organisms. 

Subject and Topic
Form 2
Biology
Balance of nature
The natural environment
Resource Type
Video
Language
English
Publisher
California Academy of Sciences
Publication Date
2014
Creator/Author
California Academy of Sciences
Keyword
Biodiversity
Natural selection

Matter and energy in food webs

Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.

Subject and Topic
Form 2
Biology
Balance of nature
Food chain and food web
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2022
Creator/Author
Sal Khan
Keyword
Food webs

Visualising vectors in 2 dimensions

Visualising, adding and breaking down vectors in 2 dimensions.

Subject and Topic
Form 1
Physics
Force
Effects of forces
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2011
Creator/Author
Sal Khan
Keyword
Vectors
two dimensional motion

What is a force?

In this unit you will learn what a force is and find out about different types of forces. This will allow you to identify forces at work in your everyday life and understand the effects of forces.

Subject and Topic
Form 1
Physics
Force
Effects of forces
Resource Type
Studieboeken
Language
English
Publisher
Department of Higher Education
Publication Date
No date
Creator/Author
Linda Pretorius
Contributor
Michael Atkinson
Keyword
Force
External Force
Net Force

Worked example: analysing a generic food web

We can analyse the arrows in a food web to identify producers, primary consumers, secondary consumers, and decomposers.

Subject and Topic
Form 2
Biology
Balance of nature
Food chain and food web
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2022
Creator/Author
Sal Khan
Keyword
Food webs

Worked example: analysing an ocean food web

We can analyse the arrows in a food web to identify producers, primary consumers, secondary consumers, and decomposers.

Subject and Topic
Form 2
Biology
Balance of nature
Food chain and food web
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2022
Creator/Author
Sal Khan
Keyword
Food webs