Answer:
Coral reefs are facing many threats such as physical damage, pollution that originates on land, overfishing, coral harvesting, etc
Explanation:
I looked it up on the web, you'll find more of the threats that coral reefs face if you search it up.
 
        
                    
             
        
        
        
Answer:
I think it might be lake annie.
Explanation:
Sinkholes don't need a large surface area but are usually deep because all the limestone gets destroyed               (i really need brainliest)
 
        
             
        
        
        
All four of those planets will rotate in period of hours
Since those planers are mainly made up from Gas, Scientist predict that it will be most likely that those planets carry a lot more angular momentum which make them rotated faster 
        
             
        
        
        
Answer:
The resistance of the air would be your answer. 
Explanation:
It acts like same as Friction.
Hope it helps! 
 
        
             
        
        
        
Answer:
   Lunar eclipses
The only shape that casts a round shadow no matter which direction it is pointed is a sphere, and the ancient Greeks deduced that this must mean the Earth is spherical.
Explanation: