Look at the sentences below. What's different?
Both are correct and the meaning is exactly the same.
You can use a the + singular noun ('The tiger') to refer to a plural noun ('Tigers'). [It's called the 'generic singular'. It's arguably more formal].
Here's another example
And sometimes ‘the’ is used to generalize a group/whole class (the + adjective)
I think it's safer to use plural nouns when you're referring to general things.
Look at the 'Before' and 'After' taken from a student's essay about mobile phones.
I've replaced all the singular nouns (in yellow) with plural nouns: