community = populations of different species living in a habitat. Population = all organisms in one species ina habitat. Ecosystem = interaction of biotic and abiotic factors in an environment.

what is the difference between a community, population and ecosystem? 

moisture level/light intensity/temperature/carbon dioxide level/wind intensity/oxygen level/soil pH

it will decrease as less photosynthesis can be carried out.

How will a decrease in light intensity affect a plant population.

New predators, competition, new pathogens and availability of food.

body structure (shape or colour). For example, white fur for camouflage or layer of fat for retaining of heat. Another example is a large surface area to volume ratio to lose heat.

What is an example of a structural adaptation? 

Give an example of a behavioural adaptation.

a functional adaptation. they produce very little sweat and small amounts of concentrated urine.

How do desert animals conserve water and what type of adaptation is this.

dandelions -> rabbits -> Fox. What is the tertiary consumer in this food chain? 

they can cause the distribution of organisms to change or a change in biodiversity.

What effect do environmental changes have? 

temperature, water availability and composition of atmospheric gases.

what 3 main changes are there in the environment? 

What is process by which water is lost from plants? 

Warm water vapour rises and cool and condenses.

Rain, snow and hail are all examples of what? 

CO2 removed from atmosphere by green plants and algae (photosynthesis). Plant respiration, releasing CO2. Animals eat plants, changing carbon to fat and protein. Animals respiration. Dead things are fed upon, returning CO2 to atmosphere. Waste, combustion also release CO2.

Temperature, water availability, oxygen availability and number of decay organisms.

the variety of different species or organisms within an ecosystem.

sewage and toxic chemicals from industries, and chemicals used on land can be washed into the lakes or sea.

Toxic chemicals used in farming, nuclear and household waste

smoke and acidic gases when they are released into the atmosphere.

Energy is radiated to the earth from the sun. It is them reemited and reabsorbed by the gases in our atmosphere, which act as a blanket for our earth. As the amount of gas in the atmosphere increases, earth is heated too much and this can cause climate change.

Sea levels will rise because of the melting ice. Distributions of species will change as weather patterns change. Migration patterns will change as certain areas get warmer. Reduction in biodiversity.

to obtain peat, which is used for compost

microorganisms decompose and then respire

how does destroying peat bogs add CO2 to the atmosphere? 

to clear land to farm and to grow important crops

less CO2 is taken in, more CO2 enters the atmosphere and there is a decrease in biodiversity.

Breeding programs ( animals bred into captivity to prevent extinction). Habitat protection. Prevent global warming and reduce waste.

It cost a lot of money and can affect food security and there will be many people who will disagree.

What are the negatives of protecting biodiversity? 

Which trophic level will contain producers and will this be bigger or smaller than the trophic level containing tertiary xonsumer 

The further up you go in the food chain, the less biomass there is. This can be shown using a pyramid of biomass

What is the relationship between biomass and food chain? 

Not all of the animal is eaten. Not all stuff is absorbed (faeces). Some biomass is converted and lost as waste.

Ecology, GCSE biology

Flashcards

cell level system

GCSE Biology AQA Triple Ecology

notes - the nature and variety of living organisms

Biology Paper 1 Knowledge Recall

Ecosystems Mindmap

The Nitrogen Cycle - GCSE