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:deciduous_tree:Environment :evergreen_tree: - Coggle Diagram
:deciduous_tree:Environment :evergreen_tree:
Biodiversity
Definition :pencil2:
Biodiversity is a measure of how much variety there is in a species, genetics and ecosystem
Most biodiverse ecosystem
Amazon rainforest
:earth_africa: Importance :<3:
What would happen without it? :forbidden::deciduous_tree::forbidden: = :black_circle::arrow_left:Earth
If the world wasn't biodiverse, everything would die as we all depend on each other
Everything would be the same
There wouldn't be any food chains
No food-Everything would die
No oxygen/carbon dioxide
:recycle: Protection :forbidden:
Problems
Waste Management
rubbish is left in landfill sites killing the nearby environment
land Use
People use the land to build on and use
Peat bogs are built up over time and contains lots of carbon so plants don't grow there
Deforestation
Trees are cut down for timber for wood and paper
Trees are burned to clear the land for farming
This uses lots of oxygen ad releases lots of CO2
Global Warming
Increase of the earth's temperature because of CO2 and other gases creating a 'greenhouse effect' on the earth
Pollution
Over-exploitation of natural materials
:question: What does it do :question:
Give us food
Lets different plants and animals live; not just one species
Creates habitats for plants, animals and humans
Average
Mean
Add all the numbers together, divide them by the amount there are.
Mode
The most common number
Median
The middle number. If there are two then find the mean of these
Range
Biggest number :heavy_minus_sign: Smallest number
Population changes
:question: Why :lion_face:
Perditor/prey
Adaptations
Bioaccumulation
Bioaccumulation
Definition :pencil2:
Bioaccumulation is when toxins enter the food chain, such as pesticides being sprayed onto crops
:explode:It's BAD:warning:
Eutrophication
:one: Fertilisers are added to water
:two: Nutrients feed algae which floats to the top
:three: Algae prevents sunlight
:four: Bacteria grows in the water
:five: It absorbs oxygen from the water and everything in the water dies
:six: The water is now called 'Anoxic'
Pyramids
Biomass
The amount of a thing + g/m ^2
Population
The number of things
Plant leaf
Parts
Waxy cuticle
protects leaf but allows light
Upper epidermix
Single layer of cells for more protection
Palisade mesophyll
Closely packed the absorb sunlight
Spongy mesophyll
Contain chloroplasts for photosynthesis
Lower epidermis
A single layer of cells containing the stomata and guard cells
Guard cells
Control things that go in and out
Stomata
Holes that let gases in and out
Photosynthesis
Absorbing sunlight
Chloroplasts
Part of a plant cell
