<span>Multi-celled organism
1. They have a nucleus which serves a great function in many cellular activities. <span>Nucleus,
the control center of the cell is the organelle which intiates,
enables, and manages the various simplex. compound and complex cellular
activities. It also stores the DNA of the cell which is then replicated
and recopied over a hundredth and thousandth times over through cell
division processes. In the nucleoplasm -nucleolus, the inner part of
nucleus of a cell is where the DNA to mRNA and to protein; vice-versa
happens.  <span> 
2. Muticellular organisms have improvised mitochrondria and chloroplast vital for many functions.</span></span></span>
        
                    
             
        
        
        
Answer: Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs
 
        
                    
             
        
        
        
2.5g/ml will sink because it has higher density compared to water
0.5g/ml will float because it has lower density compared to water