National 5 Biology - Life on Earth

Question	Answer
Biomes	Various regions of our planet as distinguished by their CLIMATE, FAUNA and FLORA
Flora	The PLANT life in a biome
Fauna	The ANIMAL life in a biome
Ecosystem	Consists of all the ORGANISMS living in a particular HABITAT
Population	The total number of organisms of the SAME SPECIES living in a habitat (example: all the lions living in a savannah)
Niche	The ROLE an organism plays within a community
Community	All the PLANTS and ANIMALS living in an ecosystem
Habitat	The place where an organism LIVES
Biodiversity	The number of DIFFERENT SPECIES living in an ecosystem
Factors which influence biodiversity are:	Biotic and Abiotic factors
Abiotic factors	NON-LIVING factors that influence biodiversity (moisture, light intensity, temperature & pH)
Biotic factors	LIVING factors that influence biodiversity (predation, grazing, competition for resources and disease)
Examples of human influences on biodiversity	Over-exploitation : Over-hunting, Over-fishing & Over-grazing Habitat destruction : Desertification & Deforestation Pollution

Resource summary

	Created by Nuno da Costa about 12 years ago