greenhouse gases can cause Earth's atmosphere to trap more and more heat. This causes Earth to warm up.
 
        
                    
             
        
        
        
Well, if you are moving forward in a direction, then your velocity is your speed with the direction you are moving in. To calculate velocity, you divide your distance traveled by the time it took to travel that distance and you add your direction to it.
So to conclude, 300/100= 3 m/s South
        
             
        
        
        
Answer:
You need to add 400mL of water
Explanation:
500mL = 5 M HCI     That means that if you divide both sides by 5
100mL = 1 M HCI         If you need ot get rid of 4 M HCI then you add 400 mL of water because that is what it is equal to
 
        
             
        
        
        
Combination
Hope this helps :)