In 2003, the population of an African country was about 19.8 million people, which is 1 million more than 4 times the population in 1950

In these large kingdoms, one ruler held all the power. A) centralized kingdoms B) city-states C) decentralized societies D) stateless societies

The metamorphic rock slate is commonly used for roofing materials. true or false

You see the moon in the sky right before the sunrise. You immediately recognize that it may be either in the first quarter or in the third quarter, but you are still not sure which is the correct phase.

Mountains can affect climate by creating rain shadows. Is the statement above true or false? T F

Astronomers can find the distance to an object if they know the object's true brightness. one way they regularly estimate the true brightness of a galaxy is to observe

scientists classify rocks into three different types what are the main basis for the classification system they chose?

What is the process where materials separate into different layers due to density?

Que fuentes de datos son utilizado por los demógrafos

What are the principles of puritanism

A large stream of moving water that flows through the ocean is called