A condition that causes a system to change dramatically is a: ...

[AEWBW]

A condition that causes a system to change dramatically is a:
 
 a. mental map
  b. threshold
  c. model
  d. subsystem

Question 2

Which of the following best describes the study of physical geography?
 
 a. memorizing the precise locations of all the major natural features on Earth
  b. knowing major Earth records (longest river, smallest ocean, tallest mountain, deepest
  lake, fastest wind speed ever recorded, largest hailstone, driest desert, etc.)
  c. integrating knowledge about a wide variety of features and processes involving all
  four of Earth's major subsystems
  d. studying the migration patterns of humans and animals

[rnehls]

Answer to Question 1

b

Answer to Question 2

c

[AEWBW]

Excellent

[bigcheese9]

Thanks for the timely response, appreciate it