Adaptations, interdependenc and competition

• The abundance and distribution of organisms in an ecosystem is determined by biotic and abiotic factors.
• Animals and plants have adaptations to allow them to compete for resources.
• Abiotic factors affecting organisms include temperature, light, humidity, and soil type.
• Biotic factors affecting organisms include predators and competition.
• Competition in plants and animals can be between individuals of the same species or between different species.
• Adaptations to the environment in plants and animals can include changes in behaviour, physiology, and morphology.
• Extremophiles are organisms that live in extreme environments.
• Very small changes to ecosystems can have large consequences, which can be difficult to predict.
• Competition in an ecosystem can be interspecific or intraspecific.
• A stable community is one in which the size of the populations of all species remain relatively constant over time.
• As a result of the increased population of rabbits, the amount of grass would decrease because they are eating it.
• All the organisms in an ecosystem are dependent upon each other, which is referred to as interdependence.
• Organisms which have more resources tend to grow more healthily and are more likely to have offspring.
• If the population of one organism rises or falls, it can affect the rest of the ecosystem.
• A simple food chain is: grass → rabbit → fox.
• If the foxes in the food chain were killed, the population of rabbits would increase because they are no longer prey to the foxes.
• A community is the interaction between a living organism and its environment.
• A community is two or more populations of organisms in their environment.
• A population is all the organisms of the same or closely-related species in an area.
• An ecosystem is two or more populations of organisms (usually many more) in their environment.
• Organisms within an ecosystem are organised into levels: producers, primary consumers, secondary consumers, tertiary consumers, and decomposers.
• Producers are plants and algae, which photosynthesise.
• Primary consumers are herbivores, which eat producers.
• Secondary consumers are carnivores, which eat primary consumers.
• Tertiary consumers are also carnivores, they eat secondary consumers.
• The abundance and distribution of organisms in an ecosystem is determined by biotic and abiotic factors.
• Animals and plants have adaptations to allow them to compete for resources.
• Abiotic factors affecting organisms include non-living elements of an ecosystem, such as climate, temperature, water, and soil type.
• Biotic factors affecting organisms include living elements of an ecosystem, such as other organisms and their waste products.
• Competition in plants and animals can occur at different levels, including within the same individual.
• Adaptations to the environment in plants and animals can involve changes to growth, reproduction, and behavior.
• Abiotic factors affecting the abundance and distribution of organisms include non-living elements of an ecosystem, such as climate, temperature, water, and soil type.
• Biotic factors affecting the abundance and distribution of organisms include living elements of an ecosystem, such as other organisms and their waste products.
• The living organisms in a particular area, together with the non-living components of the environment, are affected by abiotic factors.
• The abundance is the number of organisms in an ecosystem.
• The distribution of organisms in an ecosystem is affected by abiotic factors.
• Abiotic factors are factors that are non-living.
• Biotic factors are living elements of an ecosystem, such as other organisms and their waste products.
• Abiotic factors are non-living elements of an ecosystem, such as climate, temperature, water, and soil type.
• Abiotic factors affecting organisms include light intensity, temperature and moisture levels.