Answer:
The earth would no longer have the mobile surface it has now, gradually eroding flat and water-covered. The sea might eventually evaporate into space or freeze.
Physical structures..........
Answer:
emigration
Explanation:
The emigration of an animal, in this case of the antelope, is the cause of the lack of food.
The animals are in constant search of food and better places to cohabitate. Antelope is leaving its herd to find a better place for food and even if it sounds strange, animals are also behaving as individuals in case there is threatening of hunger.
Oxygen Depleting can cause Warm water. During summer, The upper layer of the water is lighter therefore it does not mix with the cooler water below. Which soon becomes stagnant. (Oxygen becomes depleted and toxic compounds may produce).
That is one of them. I hope it helps. I'm not so good when it comes to this type of science. But if you ever need help with Anatomy Or anything similar to that. I will gladly help.