Answer:
eoraptor
Explanation:
this is kinda controversial so yeah. anyways, this was one of the deepest and was kinda small when archeologist found it. they think it was on earth about 231 million years ago.
source(s)
https://www.smithsonianmag.com/science-nature/scientists-discover-oldest-known-dinosaur-152807497/#:~:text=Art%20by%20Mark%20Witton.,as%20the%20earliest%20known%20dinosaur.
The Mekong river is one of the primary landforms in the South-east Asian peninsula wherein it stretches 4,200 km from Southern Cambodia to the north of Myanmar. In addition, the river system has been the source of transportation as well as fisheries in settlements surrounding it. The country where the river is not its primary water system would be Vietnam.
Answer is drought. When rain doesn't fall for a long period of time it is a drought. This causes animals to have to relocate/ search vigorously for water. Since there is no rain, it becomes difficult. Plants will start to die and crops won't grow