Multicelled organisms developed before single-celled organisms. Indicate whether the statement is true or false
F
Environmental & Atmospheric Sciences
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If the amount of energy lost by Earth to space each year were not approximately equal to that received,
a. ?the atmosphere's average temperature would change. b. ?the length of the year would change. c. ?the Sun's output would change. d. ?the mass of the atmosphere would change. e. ?nothing would change.
Environmental & Atmospheric Sciences
In a systems model, movement of energy or matter into the system is a(n):
a. subsystem. b. output. c. input. d. closed system.
Environmental & Atmospheric Sciences
Pressure gradients occur at right angles to isobars.
a. true b. false
Environmental & Atmospheric Sciences
The main purpose of the Challenger Expedition was to find new fishing areas for England.
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences