Changes in environments Changes in environments can be natural or influenced by humans. Some changes are good, some are bad, and some are neither good nor bad. Pollution is a change in the environment that can influence the health, survival, and activities of organisms, including humans. Science and technology in local challenges People continue inventing new ways of doing things, solving problems, and getting work done. Men and women have made a variety of contributions throughout the history of science.
Many people choose science as a career.