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8.11C Environmental Changes!
Transcript of 8.11C Environmental Changes!
Environmental change can cause a change in the shape, size, and type of bird beaks. This happened because they had to adapt to their environment to survive.
TEKS 8.11C: I can identify how short term and long term changes affect organisms and traits in subsequent populations!
- a change that happens suddenly or quickly in the environment.
Short Term Environmental Changes
-a change that happens slowly over a period of time to the environment
Different Types of Beaks!
This spoonbill's beak allows the
bird to strain small food from
Change In Climate
Long-term: Polar bears are affected by a long term change called
. The ice that they live on melts daily.
Long-Term: Animals that live in a
polluted place have to leave so that
they don't get affected further by
This Dove's beak allows the dove to eat
small things and pick them up individually such
The humming bird's beak allows
the bird to stick its beak deep into
a flower to gather neater.
- humans cutting down trees
The squirrels home is being torn
down and it is forced to find
somewhere else to live.
Short-term: Long periods of hot temperatures and little rain, or
, can have devastating impacts on many different organisms.
Short Time: Organisms can become entangled in the debris or get sick from polluted waters.
Organisms respond to short-term environmental changes in 3 ways...
1. change their behavior
2. move to another environment (migrate)
- time range: days to hundreds of years
-time range: thousands to billions of years
Organisms respond to long-term changes in 3 ways...
Over many generations, they can:
1. evolve to survive in the changed environment
2. change their geographic locations
3. go extinct
Rattlesnakes that don't rattle!?!
REASON: The increase in populations of feral pigs who eat rattlesnakes and are attracted to the rattling sound.
Farmers have reported stumbling upon rattlesnakes that are not giving their usual warnings.
-lava flow destroys existing ecosystems. Restarts the process of primary succession
-Ash can cause death of plants and of the animals that were unable to escape.
We built this city...
excessive amounts of radioactive waste released during a nuclear leak can cause mutations in future offspring