27 The Sun’s temperature has gradually increased over its lifetime.
(A) True
(B) False
28 James Lovelock, developer of the Gaia theory, said that the presence of life on another
planet could be inferred from the composition of its atmosphere.
(A) True
(B) False
29 Something that is just a theory is unsupported by evidence, while a hypothesis is
scientifically more valid.
(A) True
(B) False
30 Oxygen is volatile, reactive chemical.
(A) True
(B) False
31 Marine algae play a role in regulating Earth’s temperature.
(A) True
(B) False
32 The Gaia theory led to the field of study known as Earth system science.
(A) True
(B) False
33 The Second Law of Thermodynamics is sometimes called the law of
(A) entropy
(B) heat transfer
(C) heat flow
(D) power
34 The lithosphere consists of
(A) water
(B) rock
(C) air
(D) printer’s ink