Answer:
The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon........
Explanation:
Thank you!!!
 
        
             
        
        
        
An example for life for an animal and plant are that the both require foods to live. Animals hunt there own food but plants make there own due to photosynthesis. But they are similar because they both require food to continue living. There are many more characteristics but that is just one common one. 
Hope this helped.
If this helped feel free to mark brainlist!
        
             
        
        
        
To calculate the mean all you have to do is add all the numbers from the data set and then divide the answer between the number of data set. For example, if you data set is 2,3,4,5,6,then you add 2+3+4+5+6=20 Now you divide 20 between the total number of data, so from 2 to 6 you have 5 numbers. You divide 20/5 and that that is equal to 4. 
Since you did not post your data set I can not tell you exactly the answer but you can use this information to walk you through it. 
        
                    
             
        
        
        
Answer 
Explanation: As soon as sodium touches your tongue, hydrogen is released with tremendous heat. Most likely an explosion will take place in your mouth. So maybe it won't be a good idea to try it unless thats what you want 
 
        
             
        
        
        
Answer:
The concentration gradient of oxygen in your lungs wants to flow toward homeostasis and oxygen is bound on red blood cells by hemoglobin, along with the attraction of oxygen to hemoglobin. The concentration gradient from carbon dioxide from the capillary to the lungs. There is more oxygen in your lungs (alveoli) than there is carbon dioxide and everything want to reach homeostasis, or level amounts on both sides. 
Explanation: