UNIT 9 FRQQQQ Flashcards
What are affects on low ph in an ocean?
- ocean acidification (Increased CO2)
- acidic water dissolves calcium carbonate that plankton need to build their shells
- coarl bleeching
- plankton @ bottom so disrups food chains
What are affects of high ph of ocean waters?
- most common in costal areas or due to algal blooms
- reduced availibity of nutrients
Food Chain
- Producer (Autotroph)
- Primary Consumer (Herbivores)
- Secondary Consumer (Carivores or Ominivoes)
- Tetitary Consumers
- Decomposers
Why do animals migrate?
- search of food and water
- Breeding and reproduction
- Climate conditions
- Avoid competion
Island Biogeography Theory
Large = more species
small = fewer species
close = more immigratiom
far = few new species
Big + close = high biod
small + far = low biod
What chemical breaks down ozone?
Chlorflurocarbons (CFCS)
- The chrloirne
What are natural sources of greenhouse gases?
- Volcanic eruptions (relesases carbon dioxide)
What are anthropogenic sources of green house gas emmsions?
- burning fossil fuels
- agricutlural practices (fertilizers)
What are the 2 main issues of global climate change?
- sea levels are rising
- polar ice caps are melting
How will the melting of permafrist hurt our economy?
lead to an increase in decay and release trapped methane
Carbon sequestrarion
Capturing carbon before it goes to the atmosphere and storing it
What are factors that allow a species to become endnagered
- its reproductive rate
- habitat preferance
- relationship to humans (food)
- sucess in competion
What are the causes of declining biodiversity
H - habitat decrituction
I - invasive species
P - population growth
P - pollution
C - climate change
O - overhavervesting
How can invasive species reduce the rste of biodiversity
By outcompeteing native species causing their decline
What are 2 ways to conserve biodiverity
- single specie sapproach
- ecosystem approcach
What are ways we can cpnserve biodiverity?
- Purchaing new land and makjong it a habitat
- restoring damaged ecosystem
