Updated 2025 GCSE AQA Study Guide: Actual Exam Questions with Verified
Answers, Detailed Rationales, and 100% Accuracy – Guaranteed Pass | Graded A+
| Complete Questions & Correct Detailed Answers | Brand New!!
What is an ecosystem? - (answers)The relationship between all living and non-living parts of a
habitat
What are the 3 levels of organisation in an ecosystem? - (answers)Individual organisms,
populations, communities
What is a population in an ecosystem? - (answers)Groups of individuals of the same species
请您
What is a community in an ecosystem? - (answers)Made of many populations living together
What is competition in an ecosystem? - (answers)Organisms competing for resources
What do plants compete for? - (answers)Light, water, minerals from soil and space
What do animals compete for? - (answers)Food, mates and territory
What is interdependence? - (answers)When species rely on each other for food, shelter,
pollination, seed dispersal etc
Why would removing one species from an ecosystem be bad for an ecosystem? -
(answers)Because of interdependence, it can affect the whole community
What happens in a stable community? - (answers)All species and environmental factors are in
balance so that population size stays fairly constant.
, What is an example of a stable community? - (answers)A rain forest or ancient oak woodland
What is an abiotic factor? - (answers)A non-living factor that effects the community
What is a biotic factor? - (answers)A living factor that effects a community
What do abiotic factors include? - (answers)Light intensity, temperature, moisture levels, soil pH
and mineral content, wind intensity and direction, carbon dioxide levels (Plants), oxygen levels
(Aquatic animals)
What do biotic factors include? - (answers)Availability
请您 of food, new predators arriving, new
pathogens, one species out-competing another
What are adaptations? - (answers)Features that allow an organism to survive in the conditions
that they normally live in
What is a structural adaptation? - (answers)A physical adaptation. Features an organism has such
as fur, beaks etc
What is a behavioural adaptation? - (answers)Something an organism does to allow it to survive
What are functional adaptations? - (answers)An internal working or body process that allows an
organism to survive
What are extremophiles? - (answers)Organisms that can live in extreme conditions such as high
pressure, high salt concentration, or high temperatures
What is an example of an extremophile? - (answers)A tardigrade
Answers, Detailed Rationales, and 100% Accuracy – Guaranteed Pass | Graded A+
| Complete Questions & Correct Detailed Answers | Brand New!!
What is an ecosystem? - (answers)The relationship between all living and non-living parts of a
habitat
What are the 3 levels of organisation in an ecosystem? - (answers)Individual organisms,
populations, communities
What is a population in an ecosystem? - (answers)Groups of individuals of the same species
请您
What is a community in an ecosystem? - (answers)Made of many populations living together
What is competition in an ecosystem? - (answers)Organisms competing for resources
What do plants compete for? - (answers)Light, water, minerals from soil and space
What do animals compete for? - (answers)Food, mates and territory
What is interdependence? - (answers)When species rely on each other for food, shelter,
pollination, seed dispersal etc
Why would removing one species from an ecosystem be bad for an ecosystem? -
(answers)Because of interdependence, it can affect the whole community
What happens in a stable community? - (answers)All species and environmental factors are in
balance so that population size stays fairly constant.
, What is an example of a stable community? - (answers)A rain forest or ancient oak woodland
What is an abiotic factor? - (answers)A non-living factor that effects the community
What is a biotic factor? - (answers)A living factor that effects a community
What do abiotic factors include? - (answers)Light intensity, temperature, moisture levels, soil pH
and mineral content, wind intensity and direction, carbon dioxide levels (Plants), oxygen levels
(Aquatic animals)
What do biotic factors include? - (answers)Availability
请您 of food, new predators arriving, new
pathogens, one species out-competing another
What are adaptations? - (answers)Features that allow an organism to survive in the conditions
that they normally live in
What is a structural adaptation? - (answers)A physical adaptation. Features an organism has such
as fur, beaks etc
What is a behavioural adaptation? - (answers)Something an organism does to allow it to survive
What are functional adaptations? - (answers)An internal working or body process that allows an
organism to survive
What are extremophiles? - (answers)Organisms that can live in extreme conditions such as high
pressure, high salt concentration, or high temperatures
What is an example of an extremophile? - (answers)A tardigrade
