steep sided lowland that rivers have cut through plateaus.

a area with a lot of trees and rain

is where the area where the water touches land

natural rise area of land,not as high as a mountain.

a mountain is a tower of rock formed by the earths plates

a plain is a low laying area with flat land

flat area that is higher then the land around it

natural formations of underground gravel,rock that trap and hold water

lakes that store water and for towns drinking water 

small streams or rivers that flow into a larger stream or river

resources,such as trees,wind that are replaced by earths natural process

coal,natural gas,and oil that cannot be replaced 

people that were brought as slaves

speed of growth populations

is the portion of populations at there age

the movement from one place to another

first people to live in texas

came from the southern border

studys human populations