The geothermal gradient Choose one:
A. averages about 5°C per kilometer in the upper crust.
B. indicates that temperatures near the mantle-core boundary may exceed the temperature of the Sun's surface (5,500°C).
C. increases exponentially as you go deeper into the Earth.
D. is the rate of change in temperature with depth within the Earth.

(C) increases exponentially as you go deeper into the Earth.

Explanation:

Geothermal gradient is the amount that the Earth's temperature increases with depth. It indicates heat flowing from Earth's warm interior to its surface. Temperature within the Earth increases with depth, this is due to the high viscous or partially molten rock found at the margins of the tectonic plates.

d. stage 4

explanation:

the existence of some kind of demographic transition is widely accepted in the social sciences because of the well-established historical correlation linking dropping fertility to social and economic development.[1] scholars debate whether industrialization and higher incomes lead to lower population, or whether lower populations lead to industrialization and higher incomes. scholars also debate to what extent various proposed and sometimes inter-related factors such as higher per capita income,lower mortality, old-age security, and rise of demand for human capital are involved.[2]

true because they haven't completely settled the case

explanation: