<u>Answer:</u>
The rocket has entered the thermosphere.
<u>Explanation:</u>
Thermosphere starts at around 90 km to 1000 km above the sea level. It is present between Mesosphere and Exosphere, The temperature climbs sharply from lower to higher and it get impacted by the solar temperature heavily. In the lower level of thermosphere almost till 500 km resides the ionization/ ionosphere. This area is ionized by solar activities and the cause of Aurora.
So if the rocket launched the height of 210 km, so it has reached the thermosphere and might also touched the ionosphere and aurora  
 
        
             
        
        
        
Animal cells or plant cells??
 
        
                    
             
        
        
        
Answer:
The tubule adjusts the level of salts, water, and wastes that will leave the body in the urine. Filtered blood leaves the kidney through the renal vein and flows back to the heart.
Pee leaves the kidneys and travels through the ureters to the bladder. The bladder expands as it fills.