In multi-celullar organisms , the cell cycle produces groups of cells that perform the same function. These groups of cells form what it is called a tissue. A tissue is made up of cells that all are specialised to perform the same function. A bunch of tissues form an organ. Organs are more complex in structure and functions.
lots of different organs together form an organ system. 
        
             
        
        
        
<span>It is True - Sand that extends from a coast into open water is called a barrier spit. 
Barrier spits are formed when there is a deposit on the shoreline due to the lateral movement of water. 
The waves are known to hit the shoreline at a particular angle which cause the lateral movement of water accompanied with the sedimentation along the coastline in the direction of the wave motion.</span>
        
             
        
        
        
 The main thing that Stanley Miller's experiment in 1953 illustrated regarding the origins of life was that "<span>a. It produced the chemicals of life by simulating earth's early conditions" since he shot a beam of light through different chemicals. </span>