Which physical system includes the constantly moving layer of gases, or blanket of air, that surrounds the planet's surface.

a) atmosphere

b) lithosphere

c) hydrosphere

d) biosphere

Which of the following definitions best characterizes foraging?

Describe what happens when two tectonic plates collide along a subduction zone

Analyze the population shifts that occurred in the United States between 2000 and 2004. Which regions were gaining population, and which regions were losing population? Why was this process taking place?

If a volcano has viscous lava, does it have a low or high silica content?

The different ages of the geologic timescale are divided up into equal units of time. Is that true or false? I need a good explanation

Trees in deciduous forest do what? A. Shed leaves during one season B. Grow in a warm Mediterranean climate C. Have needlelike leaves D. Grow in a climate that is cold year round

How many miles long is the great wall of china

What landforms are created at convergent boundaries?

In which direction does the Sun appear to move across the sky? Ofrom west to east from east to west from north to south from south to north

What is a planetary nebula neither a planet nor a nebula?