Carbohydrates are needed for energy. Foods like jam, cake and sugar contain carbohydrates.
That is to generate energy. Energy is needed to live
The energy needed by a system to initiate a process is called the activation energy. It is the minimum amount of energy required to start a chemical reaction or a physical process. Increasing the temperature can help provide the necessary activation energy for the reaction to occur.
Carbon dioxide, water, and light energy are needed for photosynthesis.
This process is known as irradiation.
Energy is required in the melting process because high is needed to melt something
Photosynthesis is the process by which plants convert sunlight into chemical energy stored in glucose, which is used as food. Plants use carbon dioxide, water, and sunlight to produce glucose and oxygen as a byproduct. This process provides the energy needed for plants to grow and for animals to obtain energy through consuming plant-based foods.
It is respiration.
In order to run or even live you need for your body to create energy in the form of ATP (adenosine tri-phosphate) by a process called cell respiration. Glucose is needed in this process. We get our glucose through the foods we eat (glucose=sugar).
The ionization energy of an element.
Photosynthesis
Because your body puts so much energy into the digestion process.