What is true about map projections?

a. they show flat surfaces in a curved manner.

b. they all distort some part of the earth's surface.

c. they show the true scale of all of earth's features.

d. they were developed by early historians.

B. They all distort some part of the earth's surface.

Explanation:

Map projections are a plane projection of the earth, which is a sphere, so when putting that into a plane projection some surface of the earth will end up distort, because of this for example in the common earth maps we all know, the land that is closer to the poles is projected up to 1.6 times bigger than it actually is.

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:

the  wilmot proviso  was designed to eliminate  slavery  within the  landacquired as a result of the mexican war (1846-48). fearing the addition of a pro-slave territory, pennsylvania congressman david  wilmot proposedhis amendment to the bill.