What major climate event occurred around 50 million years ago?

Climate Change and Azolla Ferns

Interactive Video
•
Biology, Science, Geography, History
•
6th - 10th Grade
•
Hard

Olivia Brooks
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The formation of the first continents
The extinction of dinosaurs
A shift from warm to ice age conditions
A sudden warming of the planet
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did the Arctic Coring Expedition discover in the sediment layers?
Fossilized remains of dinosaurs
A column of tiny fossilized ferns
Evidence of volcanic activity
Ancient human artifacts
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How did Azolla ferns manage to thrive in the Arctic Ocean?
They adapted to saltwater conditions
They grew in a layer of fresh water over the saltwater
They were transported by ancient birds
They evolved to survive in extreme cold
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role did Azolla ferns play in reducing greenhouse gases?
They increased methane levels
They blocked sunlight from reaching the Earth
They absorbed large amounts of carbon dioxide
They released oxygen into the atmosphere
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between Azolla ferns and Anabaena bacteria?
Anabaena provides nitrogen to Azolla
Azolla feeds on Anabaena
Anabaena protects Azolla from predators
Azolla and Anabaena compete for resources
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How much did Azolla blooms reduce atmospheric CO2 levels?
From 4000 to 2000 parts per million
From 2500-3500 to 1500 parts per million
From 5000 to 3000 parts per million
From 1000 to 500 parts per million
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happened to Azolla ferns when the Arctic reconnected with other oceans?
They evolved into new species
They died and formed sediment layers
They migrated to other regions
They adapted to saltwater
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