D4.3 Climate change HL

Question 1

Tipping Point

Answer 1

A critical threshold where small disturbances cause significant, irreversible changes in ecosystems

Question 2

What is a tipping point example in boreal forests?

Answer 2

Transition from net carbon accumulation to net loss

Question 3

How do changes in polar habitats act as tipping points?

Answer 3

Melting ice threatens species survival and disrupts ecosystems

Question 4

Boreal Forests

Answer 4

Forests that absorb CO2 but are now releasing it due to climate change

Question 5

Emperor Penguins

Answer 5

Species threatened by melting landfast ice, losing breeding grounds

Question 6

What is the effect of melting sea ice on walruses?

Answer 6

Loss of resting platforms, disrupting natural behavior patterns

Question 7

How does landfast ice melting affect emperor penguins?

Answer 7

Disrupts their breeding cycle and threatens population decline

Question 8

Carbon Accumulation

Answer 8

Process where forests absorb and store carbon, now reversed due to climate change

Question 9

What role do forest fires play in tipping points?

Answer 9

They release stored carbon, contributing to climate change

Question 10

Walruses

Answer 10

Species affected by diminishing sea ice due to climate change