3. Read the conversation again. Match the words and phrases with their definitions.
(Hãy đọc lại đoạn hội thoại. Ghép từ hoặc cụm từ với các định nghĩa.)
1. greenhouse gas
2. climate change
3. emission
4. carbon footprint
5. global warming
6. infectious disease
7. ecological balance
8. heat-related illness
a. poor health resulting from extreme heat
b. a gas or other substance which is sent out into the air
c. a gas in the atmosphere that traps heat above the earth
d. a long-term change in the earth's weather due to changes in the atmosphere
e. the amount of carbon dioxide released into the atmosphere
f. an increase in the average temperature of the earth's atmosphere
g. an illness that can be passed from one person to another, especially through the air people breathe
h. a stable ecosystem in which a large number of species live together