Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...
Christina Majaski writes and edits finance, credit cards, and travel content. She has 14+ years of experience with print and digital publications. Robert Kelly is managing director of XTS Energy LLC, ...
Indicator species are living organisms that tell us that something has changed or is going to change in their environment. They can be easily observed, and studying them is considered a cost-effective ...
What is an exclamation mark? Sentences that end in an exclamation mark are used to show intense feelings or get attention. You can use an exclamation mark ! to show when your sentence is saying ...
A complex sentence communicates more than one idea. One part (the main clause) is like a simple sentence: it can stand on its own. The other part (the minor clause) gives more detail about the simple ...
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