4. compared to earth's crust, earth's core is believed to be
a. less dense, cooler, and composed of more iron.
b. less dense, hotter, and composed of less iron.
c. denser, hotter, and composed of more iron.
d. denser, cooler, composed of less iron.

Use your vocabulary words to complete the sentences below. more of the world's population is now concentrated in heavily populated urban areas known as a this is quite a contrast from the past when or native groups were either farmers or — hunters and gatherers who moved between places in search of food. advanced technology has led to the integration of world economics and cultures, in the world's more developed countries. this integration requires , the responsible use and management of natural resources.

Describe at least three examples of how people and wildlife have adapted to their environments in the middle east.

Amajor rite of passage for the maori men of was to receive ta moko, or facial tattoos. a. australia b. new zealand c. papua new guinea d. southeast asia