The answer would be D, 7 hours of sleep
        
             
        
        
        
You could be depressed from a lot of different things, from losing your job to someone passing away
        
             
        
        
        
Chromosome is to cactus as gene is to needle.
        
                    
             
        
        
        
Answer:
Ionic compounds are ion compounds. These ions are atoms that gain or lose electrons, resulting in a net positive or negative charge. Metals tend to lose electrons, so they have a net positive charge and become cations. Non-metals tend to gain electrons, creating a net negative charge of anions.
Explanation: