Why are cells in a human body are differ in size and appearance

Cells have different shapes because they do different things.

Explanation:

Each cell type has its own role to play in helping our bodies to work properly, and their shapes help them carry out these roles effectively.

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.