Stages of Succession Ecosystems are?dynamic, meaning that they are constantly?changing The?process of ecosystem change over time?is known as?succession During succession, the?biotic?and?abiotic?con...
Practical: Determining Distribution & Abundance Finding out about the?abundance?and?distribution?of species can be achieved by counting all of the organisms present in a habitat This is possibl...
Niches: Distribution & Abundance The place where a species lives is known as its?habitat Species will occupy a specific?niche?within a habitat The term niche can be defined as?the role of a spe...
Biotic Factors The?abundance?and?distribution?of a species within a habitat are determined by a combination of biotic and abiotic factors Biotic factors?are?living?factors that influence population...
Ecosystems: Key Terms Habitat Species?are adapted, or well-suited, to life in a particular habitat A habitat can be defined as?the place where an organism lives A habitat can be?large,?e.g. a deser...
Sustainability & Plant Materials Sustainability?refers to the using resources in such a way that the requirements of the?current generation?are met?without depleting?these resources for future ...
Conditions Required for Bacterial Growth Bacteria are microscopic?prokaryotes?(meaning their cells do not contain a nucleus or membrane-bound organelles) They are often used in studies to test anti...
Development of Drug Testing Whenever new drugs are developed, they first need to be?tested?for effectiveness and side-effects, before they can be sold to the general public These are known as?clini...
Practical: Determinig the Tensile Strength of Plant Fibres The?tensile strength?of a fibre refers to the?maximum load?it can carry?before breaking For example, this information would be important w...
