They typically sleep about 16-17 hours a day; that’s a lot!
        
             
        
        
        
Answer:
When corals are stressed by changes in conditions such as temperature, light, or nutrients, they expel the symbiotic algae living in their tissues, causing them to turn completely white. Warmer water temperatures can result in coral bleaching. ... This is called coral bleaching. When a coral bleaches, it is not dead
Explanation:
 
        
             
        
        
        
Explanation:
The study of how plants, animals, and organisms are spread across the globe over time and space is known as biogeography.
Example of biogeography includes the splitting of Pangea (all the Earth's continents were one large landmass).
 
        
             
        
        
        
Multiple things cause the migration of people.
Economic issues arise:
People run out of jobs and opportunities 
(BIGGEST REASON)
Cultural reasons:
Forced intentional migration had occurred in the past on accounts of slavery and political instability 
Safety:
More popular reason now is because of war or fights with other countries, the people want to keep their family safe so they move them or move with them
Hope this helped
        
             
        
        
        
Passive transport is the movement of substances across the membrane without the expenditure of cellular energy.