Biology 3RD eso

First quarter

name:

curso 2012-13

4.4 Fill in the chart

RESPIRATORY SYSTEMDESEASE CAUSES SYMPTOMS PREVENTION

TREATMENT

5.1. LISTENING

1. What are flu symptoms?2. How many people had killed the flu viruses the last century?3. How many pandemics have occurred in the last century?4. What was the most serious pandemic recorded?5. What was the reason of that pandemic?6. What organic molecule is on the surface of a virus?7. What is the swine flu?

5.2 SPEAKING AND WRITING

Discuss in groups and answer the questions:

1. What is a pandemic?2. How does a pandemic occur?3. How does a virus transmit?

Useful expressions to explain your opinion:

“I agree with.”“I disagree with…”“I think…”“I (strongly) believe…”“In my opinion…”

Summarize the conclusion, agreements and disagreements (1 sheet each group)