Which is not true of Earth's atmosphere?
A) It is the sum of all the exhalations and inhalations of life on Earth.
B) We consider the top of the atmosphere to be 32,000 km (20,000 mi.) from Earth.
C) It protects us from deadly UV radiation, yet lets light through.
D) Its temperatures range from -90C (-130F) degrees to 1200C (2200F).
E) The principle substance is air, a mixture of many gases that behaves like a single gas.
Question 2
Subarctic climates have a long growing season owing to the long summer days.
Indicate whether the statement is true or false
True Friendship
Adapoids and omomyoids had longer snouts and are the first “true” primates.
Permanent Gases of the Atmosphere
Earth’s Revolution and Rotation: The Causes of Earth’s Seasons
Similar Rock Outcrops on Mars and Earth
Midsagittal section indicating locations of true and false pelves