Look at these sentences using ça:
The pronoun ça is a contraction of cela, but it is used much more frequently, particularly in speech or informal writing.
Depending on the context, ça can mean it, this or that.
When referring to something in general, even if the thing is plural, ça is used and followed by the singular form:
See also the more advanced C'est vs il/elle est: Saying it is
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