What is the best definition for an ‘ecosystem’? Interaction of a community of living organisms with each other and with non-living parts of the environmentOne species relying on another species for survivalSeveral populations of different species across all kingdoms living interdependently in a habitat A group of individuals of the same species2What is the term for non-living factors that affect living organisms and communities?Environmental factorsBiotic factorsAbiotic factorsInterdependent factors 3Which of the following is an abiotic factor?Light intensity New predators arrivingAvailability of foodNew competition4Which of the following is a biotic factor?TemperatureMoisture levelsAvailability of carbon dioxideNew pathogens or parasites 5All species in a community depend on one another for survival and any change can affect many different species. What is this relationship known as?EcosystemInterdependenceSurvival of the fittestFood chain6Which of the following is not an example of mutualism?Nitrogen-fixing bacteria in pea root nodulesOxpecker birds eating ticks and larvae infesting the skin of buffaloGrey squirrels out-competing red squirrelsAlgae and fungi living together as lichens

Ecology is the study of how living things interact with each other and with their environment.The environment includes abiotic (nonliving) and biotic (living) factors.An ecosystem consists of all the biotic and abiotic factors in an area and their interactions.A niche refers to the role of a species in its ecosystem.A habitat is the physical environment in which a species lives and to which it is adapted.Two different species cannot occupy the same niche in the same place for very long.

An ecosystem is a collection of all the ________ in a given area.abiotic factorsplants and animalsplantsliving and nonliving things

The nonliving part of an ecosystem is referred to as ______, while the living component is referred to as ______.Multiple choice question.biotic factors; community factorsabiotic; bioticthe community; the habitatthe niche; abiotic factors

An ecosystem isMultiple choice question.a community plus its nonliving environment.the air, soil, and other abiotic components of a given area excluding the living organisms.all the biotic interactions of different species in a given area excluding the abiotic environment.all the populations of a species in a given area.

An ecosystem is a community of organisms and their physical environment interacting together. Environment involves both living organisms and the non-living physical conditions. These two are inseparable but inter-related. The living and physical components are linked together through nutrient cycles and energy flows.