Chapter B17- Organising an Ecosytem Flashcards
What are the producers of biomass for life on Earth?
What do food chains represent?
What do all food chains usually begin with and what do these do?
What are these usually and explain what they do?
What are a range of experimental methods using transects and quadrats used to determine?
What is the order of consumers in a food chain?
What are predators?
What are prey?
What happens in a stable community concerning predators and prey?
Photosynthetic organisms
The feeding relationships within a community
A producer which synthesises molecules
They are usually a green plant or alga which make glucose by photosynthesis
The distribution and abundance of species in an ecosystem
Primary consumer—Secondary Consumer—Tertiary Consumer
Consumers that kill and eat other animals
Those that are eaten by consumers
The numbers of predators and prey rise and fall in cycles.
What are the different parts of the carbon cycle?
What are the four reactions that occur in the carbon cycle?
Green plant (producer) Consumer Death Respiration Fossil Fuels Carbon Dioxide in atmosphere
Decomposition, respiration, photosynthesis and combustion
In what three ways does decomposition occur in the carbon cycle?
What are the three conditions needed for aerobic decomposition?
What happens if not all three of these conditions are present?
What does this reaction produce and what is it?
Why are all materials in the living world recycled?
What does the carbon cycle do?
What does the water cycle do?
What two things continuously happens to water?
What are biogas generators used for?
What do environmental changes affect?
What are the three environmental changes?
Bacteria, fungus and soil insects
Moisture
Oxygen (oxygen rich conditions)
Warmth
Anaerobic decomposition takes place
Methane gas a powerful greenhouse gas
To provide the building blocks for future organisms
Returns carbon from organisms to the atmosphere as carbon dioxide to be used by plants in photosynthesis
Provides fresh water for plants and animals on land before draining into the seas
It is continuously evaporated and precipitated
Used to produce methane gas as a fuel
The distribution of species in an ecosystem
- Temperature
- Availability of water
- Composition of atmospheric gases.
What are the three types of environmental changes?
How is methane released from cattle and sheep?
How else can methane be made by?
What is this exposed to?
What can methane be used as?
Seasonal, geographic or caused by human interaction
As a by-product of their digestion of grass cellulose
Anaerobic fermentation from human and animal waste (faeces)
Anaerobic respiration
A biogas
