Which of the following factors is an example of an environmental pull factor that could encourage a person to migrate? a. a poor standard of living in another city b. a great climate in another city c. natural disasters in another city d. job opportunities in another city

The answer is B. A great climate in another city.

Environmental Pull Factor is defined as being attractive environments for migrants (hence the word "pull"). A great climate in another city means that the migrant is attracted to it and makes it a factor to why he/she migrates.

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.