Technology refers to the application of our knowledge to the everyday life, that is, to living in the environment.
There are numerous types of technology and many areas where it is applied (e.g. engineering, construction, biomedical science, etc) but overall it is the usage of tools -created by humans- to a<em>dapt to the environment with the objective of making things in a better and more advance way </em>and <em>to solve problems in a faster and more effective way</em>.
Over the past three decades, evidence has accumulated that even low levels of lead can slow a child's development and cause learning and behavior problems.