Mammoths
Which are bigger, Columbian or Pygmy mammoths.
Columbian Mammoths
What does "Geo" mean?
Earth
What is the biosphere?
The biosphere contains all living things on Earth.
Why did the mammoths swim to the Channel Islands?
The mammoths could smell the fresh vegetation from the mainland, and wanted food.
Which mammoth had an easier time traveling on the Channel Islands.
Pygmy mammoths
What does the Geosphere include?
It includes rocks and minerals.
What is the hydrosphere?
Its all the water.
How did the Columbian mammoths get to the Channel Islands?
When the sea level was low due to glaciers they were able to swim from the mainland to the Channel Islands (5 miles).
How tall is a Pygmy mammoth?
4.5 to 7 feet tall
What is subduction?
Subduction is the movement of a tectonic plate beneath a another tectonic plate.
How did the hydrosphere affect the mammoths?
Helped the mammoths get to the islands and provided food.
Whats is the difference between a Columbian mammoth and a Pygmy mammoth?
Pygmy: smaller, ate less, needed to be able to travel around the island
Columbian: bigger, ate more, couldn't travel around the island
Which Channel Island were Pygmy mammoths once found?
Santa Rosa Island
What caused the Channel Islands to form?
Subduction
Name something in the biosphere.
Any living thing
Why was the sea level lower than it is now?
Because of the ice age creating giant glaciers
What is natural selection and what was its effect on Columbian mammoths.
Natural selection is when animals adapt to survive to their environment and it caused the Columbian mammoths to shrink.
What tectonic plate lies beneath the Channel Islands?
The North American plate and the Pacific.
True or false water is include in the biosphere.
True
Why did the Columbian mammoth evolve into the Pygmy mammoth?
because there was less food and the size of the mammoths made it hard for them to travel the island, which put pressure on them to shrink down.