Answer:
oxygen
Explanation:
its the only element needed
The production of these crops is centered in the eastern third of the state but there are notable concentrations elsewhere, particularly in the river valleys of the Arkansas River (central Arkansas) and the Red River (southwest Arkansas).
Genetic method makes scientific research as basis for understanding behavior. This was believed to come from genetics and the environment. Genetics according to this field can strongly influence behavior and accumulates during childhood to adulthood. Environment can create stimulus to push actions and influence attitude.
In molecular biology, the term double helix refers to the structure formed by double-stranded molecules of nucleic acids such as DNA. The double helical structure of a nucleic acid complex arises as a consequence of its secondary structure, and is a fundamental component in determining its tertiary structure.