Summary populations and sustainability biology kerboodle notes
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Course
A2 Unit F215 - Control, Genomes and Environment
Institution
OCR
Book
A Level Biology for OCR A Year 2 Revision Guide
summary notes on populations and sustainability topic from the kerboodle specification, covering all parts of the specification points including 3 examples of ecosystems being managed and mentioned, and 4 environmentally sensitive ecosystems.
, 1) Plentiful resource = all have enough to survive/reproduce
Increase in population size
2) Many more individuals share food/space available = limited resources so not
enough available for all to survive
Decrease in population size
3) Less competition:
- Smaller populations means less organisms are competing for the same resources
- More survive/reproduce →population growth
This cycle repeats
Predation
Predator kills and eats prey
Interspecific competition operating btw predator and prey species
Predators have evolved to become highly efficient in capturing prey
3
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