Answer:
Single celled or unicellular organisms use simple processes such as diffusion and active transport to gain nutrients. iii) Unicellular organism requires less energy and makes use of simple process such as diffusion to perform gas exchange.
Explanation:
Working with skeletal muscles, tendons, ligaments and joints, the bones form the moving machinery of human body. The major role of bones in movement is that they act as levers, which make use of the forces generated by skeletal muscles in a beneficial way.
Detritivores are very important to energy transfer within an ecosystem because they are consumers that eat the trash and other wastes.
