ESS Flashcards
What are trophic levels?
Any sequential stages in a food chain, occupied by primary,secondary,tertiary or quaternary
Describe a Food Chain
Explains when organisms ( living things ) eat other organisms.
What is DDT?
Pestidices used for killing species. Used in agriculture
What is bioaccumulation?
Accumulation ( Increase in concentration in just 1 ) of a substance inside an organism of water and food.
Define biomagnification
An increase in LEVEL as one moves higher in the food chain
Give an example of how DDT can enter and impact food chains.
DDT enters a food web AT THE LOWEST LEVEL when small organisms like insects eat part of a plant infected with this toxic substance.
Define predator
an animal that lives by killinh and eating other animals
Define prey
an animal that is hunted and killed by another animal.
What are keystone species
Important and KEY species
What is a succession?
Is the process of change over time in an ecosystem involving pioneer.
What is the relationship between succession and species diversity?
Species diversity increase with succession, and this relationship is important for conserving large areas of old-growth habitats.
What can you do to stop biassed results?
Multiple people, Participants review results, Verify with more data sources.
What is resilience?
Process and outcome of successfully adapting to difficult or challenging life experiences, especially through mental, emotional, and behavioral flexibility and adjustment to external and internal demands.
Which biomes are generally more resilient?
Rainforests
What is productivity?
The state or quality of producing something.
What is disturbance?
The act of disturbing someone or something
What is regeneration?
Natural process of replacing or restoring damaged or missing cells, tissues, organs, and even entire body parts to full function in plants and animals.
Describe a positive feedback mechanism.
When an ecosystem can’t go back to equilibrium after disturbance (destabilizer)
Describe a negative feedback mechanism.
When an ecosystem can go back to equilibrium after disturbance (stabilizes)
List some organisations that work in conservation.
WWF and Greenpeace
How can feedback mechanisms maintain stability in a threatened ecosystem?
They will help stabilize the threatened ecosystem as it stabilizes and destabilizes an ecosystem
What are the different environmental value systems? How can culture influence them?
Ecocentric, anthopocentric, technocentric
What is the water cycle?
Flow in energy, diagram
How can humans interfere with the water cycle?
Urbanization, building roads and buildings –> increase surface runoff and less infiltration since there is less soil to infiltrate.
Deforestation –> increase in surface runoff as there is less inflitration}
agricutlire -> soil is unable to infiltrate water so increase surface runoff
