many things affect a child's development, and even more are things that a child or you cannot control, but despite that it is possible to help a child through them and guide the child's path by teaching them more about themselves to get them to better understand how to work with the things in their lives :Factors that affect a child's development
What Does a Catalyst Do in a Chemical Reaction?: A catalyst permits a different energy pathway for a chemical reaction which has a lower activation energy. The catalyst is not consumed in the chemical reaction.
Last legs: the species with only a few remaining individuals - graphic The rate of animal extinction has rocketed in the past half-century, as hundreds - possibly thousands - of species disappear each year. Our graphic indicates some of the species whose numbers have dwindled to a vulnerable few.