Critical Thinking
The Ocean biome is the largest biome in the world and divided into what three zones?
Pelagic zone, abyssal zone, and benthic zone.
Lakes are divided into what three zones?
Littoral, limnetic, and benthic zone.
What is Mortality?
How fast or how many members of a species die in a a given time
Why do most populations (cats, dogs, mice) have lots of offspring?
Because it is expected that some or most of the offspring will die and the population won't grow out of control
Can a population continue to grow forever at its biotic potential?
NO!
What is the difference between Lakes and ponds?
Ponds can potentially dry up.
What is the carrying capacity for the human population?
We don't know.
Maybe 2 billion
Maybe 12 billion
What is Natality?
How fast or how many members of a species are born in a given time.
How many humans are added to the population every year?
Roughly 1%, 80 million people
What would a mathematical curve for Biotic potential look like.
An exponential curve.
Describe the concept of levels of organization
Teacher approval.
What happens when limited resources are exhausted?
Population may crash, greatly reduce, or never recover.
What is Immigration?
How fast or how many members of a species move into a given area in a given time.
What are some examples of limiting resources?
Animals: Food, water, shelter, fertility
Plants: Water, sunlight, soil nutrients
What is one fertility factor that determines a species biotic potential?
How often they reproduce, how many are born at a time, how long are the females fertile for, how young are the females when they become fertile.
What is the only resource on earth that does not need to be recycled?
Energy
How do you determine a species carrying capacity?
By determining a median between a species population overshoot and species population crash.
What is emigration?
How fast or how many members of a species move out of a given area in a given amount of time.
What are density dependent factors defined as?
Factors that are influenced by the population density in an area
What are density independent factors defined as?
Things that will change a population whether the population density is high or low
DAILY DOUBLE!!!!!!
What happened to the reindeer on St. Mathews Island. Explain in detail. Should have three parts to your answer.
How does energy enter the biotic world?
Photosynthesis.
What is a limiting resource?
Things that are needed by a population that are in limited supply
What are some examples of density dependent factors?
Competition for limited resources, Parasitism and disease, predation
What are two examples of density independent factors?
Human activity, unusual weather, natural disasters, seasonal changes.