6. How do scientists determine when an era begins and when it ends?

Which tools are visuals that geographers use to interpret the world? Choose all answers that are correct. Question options: maps satellites graphs sensors

If the earth did not have an atmosphere, the stars would be visible all the time. True or False. The concentration of tropospheric ozone in polluted air is much greater than the normal concentration of ozone observed in the stratosphere.

Did shi huangdi improve china

Describe 2 ways that we find planets orbiting other stars

These factors make the Danube River important to Eastern Europe. (choose all that apply) 1. It connects Central and Eastern Europe. 2. It contains large deposits of petroleum. 3. It is an important trade route. 4. It is used for transportation.

What do stream terraces represent? Put another way, what were stream terraces before they became a terrace?

The American Revolution inspired the French Revolution. True False

Identify and explain three past or current consequences of the Partitioning of India in 1947.

Why is the black earth region in Russia called Black Earth?

The US counties that border Mexico have an unusually high percentage of people in which age group? A. 0-17 B. 18-39 C. 40-59 D. 60-79