Answer: elements and compounds
Explanation:
Elements and the 'Big Bang' theory. During the formation of the universe some 14 billion years ago in the so-called 'Big Bang', only the lightest elements were formed –hydrogen<span> and </span>helium<span> along with trace amounts of </span>lithium<span> and</span>beryllium<span>.</span>
Time Series analysis can be useful to see how a given asset, security or economic variable changes over time. Examples of time series are heights of ocean tides, counts of sunspots, and the daily closing value of the Dow Jones Industrial Average.
