Concept:The atmosphere is the gaseous envelope that surrounds the earth and supplies essential gases for living organisms.
Explanation:Option A is an importance of the hydrosphere, not the atmosphere.
Option C relates to the biosphere because timber is obtained from living vegetation.
Option D is an importance of the lithosphere, since roads are built on the earth’s crust.
The atmosphere contains oxygen, nitrogen, carbon dioxide, and other gases.
Animals and plants need oxygen for respiration.
Plants also require carbon dioxide for photosynthesis, and nitrogen for protein synthesis.
Therefore, among the options given, the atmosphere directly provides oxygen needed for respiration.
Answer:The correct answer is B. It provides oxygen for animals and plants for respiration.