Multiple Choice
Which of the following correctly lists the four classical stages of lobar pneumonia in order?
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1. Introduction to Biology
Introduction to Biology
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Which of the following best describes the exosphere?
A
A region within the cell that contains genetic material
B
The outermost layer of Earth's atmosphere, where atmospheric particles can escape into space
C
A layer of the ocean where most marine life is found
D
The layer of Earth's crust where fossils are most commonly found
Verified step by step guidance1
Understand the term 'exosphere' by breaking it down: 'exo-' means 'outside' or 'external,' and '-sphere' refers to a layer or region. This suggests it is an outermost layer.
Recall that the exosphere is a part of Earth's atmosphere. It is the outermost layer, where the density of atmospheric particles is extremely low.
Recognize that in the exosphere, particles are so sparse and have such high energy that they can escape Earth's gravitational pull and drift into space.
Eliminate the incorrect options: The exosphere is not related to cells, oceans, or Earth's crust. These options describe biological or geological concepts, not atmospheric layers.
Conclude that the correct description of the exosphere is 'The outermost layer of Earth's atmosphere, where atmospheric particles can escape into space.'
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