18. Most chemicals affect the entire body. The ‘target organ’ where the concentration of the chemical is easiest to measure. True or False
18. Most chemicals affect the entire body. The ‘target organ’ where the concentration of the chemical is easiest to measure. True or False
The Earth is made up of four spheres known as lithosphere, atmosphere, hydrosphere, and biosphere. All these spheres are interdependent and affect each other.
The atmosphere acts as a protective shield against the harmful ultraviolet rays of the Sun and also obstructs any incoming celestial body such as an asteroid or meteoroid. Ever since the formation of the atmosphere, it has been evolving by changing its chemical composition. The biosphere includes the living entities of the Earth. The various elements of the biosphere are plants, animals, human beings, and micro-organisms.
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