Climatologist Michael Mann and his colleagues have graphed a ...

[mwit1967]

Climatologist Michael Mann and his colleagues have graphed a thousand-year period (the famous hockey stick chart) that shows how __________ were more or less constant until they spiked __________.
 
  a. CO2 levels; 100 years ago
  b. carbon dioxide and monoxide; in the last century
  c. global temperatures; in the past half-century
  d. organic matter levels; in the past half-century

Question 2

What happens to regions just above sea level when the sea ice melts?
 
  a. Sea levels fall.
  b. They are subject to flooding and possibly disappearing under water.
  c. New land becomes available for farming.
  d. Immigration increases.

[jojobee318]

Answer to Question 1

c

Answer to Question 2

b

[mwit1967]

Excellent

[kusterl]

Gracias!