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Réponse :

Bonjour,

1/

since 2000 ( depuis 2000 )

since last year

in the last 10 years ( au cours des 10 dernières années )

since the start of the century

in the last few months

since the 1950s

2/

a. The droughts have become longer since the 1970s.

b. Average temperatures have risen more quickly since 1979.

c. Scientists have learned a lot in the last 10 years.

d. How much has the global temperature risen in the last 100 years ?

3/

a. The average temperature has risen by 3°F since the middle of the past century.

b. Alaska’s hottest years on record has occurred since the start of the decade.

c. Large wildfires have become more frequent in the last 10 years.

d. Muir Glacier has retreated more than 12 kilometres since 1941.

e. Sea ice extent has declined since the end of the 1970s.

f. Climate change has increased erosion and flooding in the past decades.