These activities are fueled by the energy obtained from food through metabolic processes like respiration, which convert stored energy into usable forms for muscle movement and other bodily functions.

The energy for life processes comes from food, which is broken down through digestion and utilized by cells through processes like respiration.

Living beings need to perform life processes such as respiration, digestion, circulation, and excretion to survive.

The gravitational force experienced by an object near the Earth’s surface increases with decreasing distance between the object and the Earth’s center, which is typically represented by the radius of the Earth, denoted as ‘R’.

The distance ‘d’ in calculations involving gravitational force for objects on or near the surface of the Earth is equal to the radius of the Earth, denoted as ‘R’.