Using AND ensures that the topic you’re researching is the topic you get in the search results.
To see to it each search result includes bothAmazonandrainforest, use the AND operator.
Be careful when typing the search operator; it makes a difference in the search results.
OR Boolean Operator
Google uses the OR operator to search for one term or another term.
An article can contain either word but doesn’t have to include both.
This usually works well when using two similar words or subjects you want to learn about.

The break character (|) can be used in place of OR.
The break character is the one attached to the backslash key ().
It ignores phrases such assausage and cheese biscuits.
Typerecipes gravy (sausage | biscuit)to search for gravy recipes for either sausages or biscuits.
For a Boolean operator to work, it must be in all capital letters.