Module 1.2

Examine trends in population estimates for some plant and animal species within an ecosystem

Outline factors that affect numbers in predator and prey populations in the area studied

Identify examples of allelopathy, parasitism, mutualism and commensalism in an ecosystem and the role of organisms in each type of relationship

Define the term adaptation and discuss the problems associated with inferring characteristics of organisms as adaptations for living in a particular habitat

Identify some adaptations of living things to factors in their environment

Describe and explain the short-term and long-term consequences on the ecosystem of species competing for resources