1. Climate and Change 4

2. 2.1 Climate and Ecosystems
Recap – last lesson - climate changes this century were small scale and lasted … years???
Learning Objectives:
To understand the Ice Age and that not all species were able to adapt to the changing climatic conditions.
To consider if a similar situation could arise with current climatic changes
Key vocabulary:
Geological Climate Events
Quaternary
Pleistocene
Ecosystems
Food chains
Extinction & mass extinction
Megafauna

3. Might the dinosaurs come back?
Watch and make your own mind up!
Define ecosystem, food chain, extinction.
When did many dinosaurs suddenly become extinct – check out on Geological Time Scale below:
Why might it have happened? Use words ecosystem, food chains, Pleistocene in your answer

5. What is Megafauna?
Write a definition

6. What happened to the Megafauna?
Use Digby P. 31 to answer this question.
Make sure you use the words mass extinction, Quaternary, food chain, ecosystem in your answer.

7. Where was the Megafauna Extinction the greatest?

8. Where was the Megafauna Extinction the greatest?
Complete the table below using the data from the graph above.
Draw pie charts on your world map to display this information.
Then answer:
Which regions lost the greatest % of megafauna?
Which regions lost the least % of megafauna?
Why do you think that might be?
Extension – total up the % and draw a pie chart to display the areas of the world that lost megafauna
EXAM STYLE QUESTION (Write out and answer)
Using examples, describe how ecosystems were affected by climate change in the past (4 marks).

9. Megafauna Extinction North America South America Australia Europe
Africa
Extinct 33
Survived 12
Total 45
% extinct
(E ÷ T x100= )
73%