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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

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BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

Earth’s 23.5° tilt on its axis directly causes:

a. latitudinal variation in average annual rainfall.

b. ocean currents to rotate clockwise in the Northern Hemishere.

c. microclimates to vary dramatically over short distances.

d. low rainfall on the leeward side of mountain ranges.

e. seasonal variation in the amount of solar radiation.

Summary Introduction

Introduction:

Earth is a spheroid planet that is tilted on its axis at 23.5° (degrees). It rotates on its axis and revolves around the sun, which affects the diurnal and annual temperature, light, and other weather parameters.

Explanation

Justification/Explanation for the correct answer:

Option (e) is given that Earth's tilt on its axis causes annual variation in the amount of solar radiation received. When the Earth goes around the sun while rotating simultaneously, only one side of it receives direct sunlight in higher intensity. The other face of the Earth that is away from the sun receives low intensity solar radiation and experiences winters. Hence, option (e) is correct.

Explanation for the incorrect answers:

Option (a) is given that Earth's tilt on its axis causes variation in rainfall along the latitude annually. The rainfall depends on the temperature, presence of moisture or a water body, and of a barrier like a mountain. Earth's tilt does not affect the rainfall directly. So, it is an incorrect option.

Option (b) is given that the oceanic currents rotate clockwise in the northern hemisphere due to the tilt of the Earth on its axis...

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