Summary
Summary 1. Environmental Studies (Population Ecology)
- Course
- Life Sciences 2019
- Institution
- Saheti School (SAHETI)
Life Sciences Notes for IEB matric 2019
[Show more]
1 review
By: inaamabdoolsamad • 4 year ago
By: TaneilThompson • 4 year ago
:)
Content preview
Taneil Thompson1. Environmental Studies
PLEASE NOTE THAT I HAVE SIFTED THROUGH THE IEB FINAL PAPERS
FROM 2011 TO 2018 AND ADDED SOME INFORMATION THAT KEPT
COMING UP. THIS INFORMATION IS IN PINK. I HAVE ALSO CHECKED
THROUGH THE SAGS DOCUMENT TO MAKE SURE THAT ALL THE
RELEVANT INFORMATION IS HERE. J
1. Population Ecology
1. Ecology: study of interactions of organisms with their physical and
biological environments
2. Population ecology: concerned with fluctuations in both size of a
population and factors that regulates these fluctuations
3. Biosphere: part of earth where living organisms are found
4. Ecosystem: made up of groups of different species or organisms that
interact with each other and the environment [NEED TO KNOW DEF.]
5. Organism: individual form of life composed of a single cell or a
complex of cells that are capable of growing and reproducing
6. Community: group of different species that inhabit and interact in a
particular area / flora and fauna in an ecosystem [NEED TO KNOW
DEF.]
7. Species: group of closely related organisms that are very similar to
each other and are usually capable of interbreeding and producing
fertile offspring
8. Individual: single organism capable of independent existence [NEED
TO KNOW DEF.]
9. Population: group of organisms of the same species that occupy the
same area and can breed freely with each other [NEED TO KNOW
DEF.]
10. Population size: total number of individuals in a population
11. Population density: Number of organisms per cubic metre
Individual > Species > Population > Community > Ecosystem > Biosphere
What affects the size of a population?
Increases Decreases
Natality (birth rate in animals or the Mortality (death rate)
production of seeds in plants)
SAHETI School, 2019
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TaneilThompson. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R70,00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
47561 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 15 years now