The recent alternative explanation for the disappearance of Earth's early atmosphere sees this as the primary causative agent:
A) volcanic outgassing.
B) collisions of Earth with other large bodies.
C) periodic energy pulses from the surface of the Sun.
D) gravitational attraction of the Moon.
Answer: B
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Which algae was responsible for the Lake Erie harmful algae bloom causing our recent water crisis?
A. Anabaena B. Aphanizomenon C. Lyngbya D. Microcystis
The expanse of open water across which the wind can blow without interruption is termed the _______________
Fill in the blank(s) with correct word
The vertical pressure gradient force is directed ____________________
Fill in the blank with correct word.
Carefully examine the relative positions of the lettered arrows in the diagram. Which letter corresponds most closely to the first appearance in the rock record of abundant fossils?
