How many time zones are there on earth?

12

24

7

48

True or false? The first great civilization all had one thing in common: access to a river or other natural water source that allowed them to grow surplus amount of food

Name two ways in which the earth system relies on energy from the sun?

At the 2012 summer olympics, Jamaican athlete usian bolt won the gold medal in the men's 100 meter track event. he ran the distance at an average speed of 34.1 feet per second. convert this speed to miles per hour.

Which statements accurately describe Brazil's current economy?

How does wind transport sand grains

Describe how modern science operates and distinguish it from philosophy, pseudoscience, and religion. In recognition of these distinctions, what individual (s) and methods mark the beginning of Astronomy as a science?

What two tectonic plates caused the Himalayan mountains

The longest mountain range in North Africa is what?

Chemical weathering is noted by which of the following

What factor drove Great Britain to divide Ireland into two states in 1921?