Answer: b. Necton 
Explanation:
Necton is the term used to refer to aquatic organisms that are able to swim against the current of the water they are in. For this reason they are called "actively swimming" organisms. Aquatic plants that are unable to move against the current are called Plankton. 
Fish, whales and dolphins are able to move against the current and so are classified as Necton. It is worthy of note however, that some organisms are able to transition from Plankton to Necton as they mature. 
 
        
             
        
        
        
<span>A scientist who tries to determine how
the differences in a particular personality trait are correlated with
differences in a particular gene, is using the molecular genetics method. Molecular genetics is a</span> variety of research techniques that scientists use to learn about how genes
are associated with which personality traits.<span> Molecular genetics deals </span>with the makeup
and functions of genetic material at the molecular level.
 
        
             
        
        
        
Answer:
Human diploid cells have 23 pairs of chromosomes. Because of independent assortment during meiosis I, there are 223, or 8.4 million possible gametes that may be created even if crossing over didn't occur.
 
        
             
        
        
        
Answer:
<h3>Sankey diagrams are a type of flow diagram in which the width of the arrows is proportional to the flow rate. The illustration shows a Sankey diagram that represents all the primary energy flows into a factory. </h3>
Explanation: