Oxygen (O₂) is
A) a gas that principally originates from volcanic sources.
B) a by-product of plant-leaf operations that are stimulated by light.
C) one of the gases from Earth's earliest atmospheres.
D) now measured at 78.084 percent by volume in the homosphere.
Correct Answer:
Verified
Q9: Based on composition, the atmosphere is divided
Q26: A by-product of photosynthesis is
A) nitrogen.
B) argon.
C)
Q28: The two most abundant gases in the
Q29: About half of Earth's crust consists of
Q30: The ozonosphere is critical to life because
Q36: Temperatures within the stratosphere
A) decrease with altitude
Q59: Which of the following is false regarding
Q60: The Tropic of Cancer refers to
A) that
Q63: The thermosphere closely corresponds to the
A) ionosphere.
B)
Q68: Which of the following lists the correct
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents