Different land areas of the United States grow different crops because some crops can't be grown everywhere. For example some plants can survive the winter while others can't.
A food chain shows the feeding relationship between different organisms in a particular environment and/or habitat. Plants are at the bottom of a food chain because they are producers that make their food from a process called photosynthesis . Organisms that can make their own food are called producers.
material culture includes all of the physical objects that people create and give meaning to. Cars, clothing, schools, computers, and books would be examples. An object only becomes part of culture after meaning have been given to it. A rock in a field has no meaning until it is used as a tool or to build a fence.
when they hit it at too shallow of an angle it causes them to curve away