EVERYDAY SCIENCE

SCIENCE

RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Ultimate source of energy for all living organisms is
A
Plants
B
Atmosphere
C
Earth
D
Sun
Explanation: 

Detailed explanation-1: -Sunlight is essential for photosynthesis. Sunlight provides energy for the reaction between carbon dioxide and water to produce glucose and oxygen. Hence solar energy is considered as the ultimate source of energy.

Detailed explanation-2: -The sun is called the ultimate source of energy because it is the source of almost all energies of the earth. Plants convert light energy from the sun into chemical energy (food) by the process of photosynthesis.

Detailed explanation-3: -On Earth, the main source of natural light is the Sun. The Sun makes its light when atoms smash together inside it, releasing huge amounts of energy. It fires off the energy into space in all directions. Some of the radiation travels to Earth as the light and heat we know as sunlight.

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