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"the measure of the number or frequency of individuals of the same species,” whereas diversity demonstrates the “number of species present (species richness) and their abundance (species evenness) in an area or in a community”

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Ecology is the study of the relationships between living organisms, including humans, and their physical environment; it seeks to understand the vital connections between plants and animals and the world around them.

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ecology enriches our world and is crucial for human wellbeing and prosperity because of everything it provides, like food water and medicines. Without it, we wouldn't be able to live.They also provide us with the energy we need to sustain human civilisation. There is a growing realisation that we cannot combat climate change and prevent critical loss of biodiversity by simply preserving the environment.

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Only about 10% of energy stored in biomass at a trophic level is passed on through all levels.

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Explain the difference between a food chain and a food web.

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Explain the difference between a food chain and a food web.

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A food chain outlines who eats whom. A food web is all of the food chains in an ecosystem.

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How do primary producers make their own food?

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How do primary producers make their own food?

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primary producers make their own food from carbon dioxide.

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Compare and contrast photosynthetic producers with chemosynthetic producers.

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Compare and contrast photosynthetic producers with chemosynthetic producers.

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photosynthesis is powered by sunlight while chemosynthesis runs on chemical energy.

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a relationship between 2 organisms where one organism benefits and the other isn't affected.

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a type of symbiotic relationship where all species involved benefit from their interactions.

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Association between two different organisms wherein one benefits at the expense of the other.

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the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

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a species' average population size in a particular habitat.

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the direct or indirect interaction of organisms that leads to a change in fitness when the organisms share the same resource.

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describes the role an organism plays in a community.

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made up of the parts of Earth where life exists—all ecosystems.

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a non-living part of an ecosystem that shapes its environment.

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a living organism that shapes its environment.

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any kind of green plant.

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n. organism that breaks down dead organic material.