65 million years ago there was a mass extinction that is best known for killing the dinosaurs. There was also a large deposit of dust that contained substances only found in asteroids. What most likely killed off the dinosaurs?
An asteroid impact caused the Sun to be blocked.
They were crushed by an asteroid.
O The water supplies were polluted.
O Mammals evolved to be better competitors.

First of all, think bigger, the dinosaurs could've died from the cold, (when homo-sapiens were getting onto their feet) Asteroid, Volcano eruption, flood, drought. The asteroid impact theory is only one of many that could've happened.

africa

explanation:

the dust bowl, otherwise known as the dirty thirties, was a huge dust storm that killed multiple (and i mean  multiple) farmer's crops, leaving them homeless, and foodless, and jobless. in california, there were 5.7 million residents, and the population shrank as mexicans were repatriated. however, when the dustbowl happened, a lot of people began to move to california. by 1940, 250,000 people had arrived. therefore, your answer would be  the population increased, massively.  i hope this !

explanation: